Questions tagged [energy]
The energy tag has no usage guidance.
75
questions
1
vote
1
answer
50
views
Derive the MET equation for caloric expenditure estimate
A Metabolic Equivalent of Task (METs) is:
1 MET := Consumption of 3.5 mL_O2/kg/min ~= 1 kcal/kg/hr
Most online calculators that use MET to estimate caloric burn use:
Eq. 1) Cal_kcal = Duration_min * (...
- 11
0
votes
1
answer
51
views
glycogen and fat burn in low intensity aerobic exercise
I've heard two seemingly inconsistent claims about low intensity aerobic exercise (walking / zone 2 running) -
During low intensity activities the primary energy source is glycogen in muscles and ATP ...
- 121
2
votes
1
answer
117
views
What is the easy, highly effective way to deal with soreness and exhaustion?
On and off over the past years I’ve had some periods of pretty intense exercise and while it can feel really good I sometimes actually rue just how tired, sore and exhausted I can get from such a good ...
- 121
0
votes
1
answer
93
views
Can increasing exercise duration and intensity increase energy levels or overall stamina over time? Are there any known strategies to deal with this?
Background/Context
Just over a year ago, I began bicycling. Partially due to the situation at the time and also because I just enjoyed it, I became more or less "addicted" in a way. I first ...
- 281
3
votes
1
answer
164
views
general question about dietary supplement for my trainning
I have ~30 years, I do sport almost every day.
My sessions are divided between:
climbing (1* per week)
running to prepare for a half marathon (3/4* per week)
muscle building via a crossfit session (...
- 177
1
vote
1
answer
165
views
25/M/5'11" Lack of energy at gym, lack of appetite at home... what do I do?
Two years ago I used to be 66-68 kg. I could lift quite well and I used to eat a lot for my size, at every meal. I didn't continue going to the gym. Mostly due to covid and laziness.
Now I am 74-76 kg,...
- 113
1
vote
1
answer
211
views
How can we evaluate properly the work (energy) performed by the muscles?
I've seen many time people evaluating the work performed by muscles to move a certain weigth m over a distance d through a force F, for simplicity along the force direction, by using the physics ...
- 1,711
4
votes
1
answer
380
views
Formula for energy consumption while jogging, based on weight and speed
Does someone know the plain formula which calculates the energy needed while running, based only on body weight and speed?
I googled around a lot but don't find this exact formula.
- 141
1
vote
0
answers
116
views
How to use METS to estimate additional caloric expenditure and weekly recommendations
I have a question regarding metabolic equivalents for exercises (METS) that I've been unable to google an answer to. It seems that it's either so incredibly obvious that it doesn't make sense to ask ...
- 111
1
vote
2
answers
183
views
Why can't you lose/maintain fat on a bulk?
Everyone I've ever talked to has said that you will gain some, or a lot of, fat on a bulk.
Why?
Logic 1: If you lift weights, your body wants to grow your muscles.
Logic 2: Your body can only grow ...
- 257
1
vote
1
answer
87
views
Does the body's insulin response change during exercise?
Lots of people will tell you that if you eat too much sugar you will get a blood sugar peak and then a corresponding drop due to the production of insulin, leaving you low in energy and craving more ...
- 11
4
votes
1
answer
514
views
Extremely out of breath when working out and how to improve
A bit of background...I have been doing a 3 day a week workout. I use equipment in my basement and I have an 8 month old so possibly less sleep than average joe. I started about 8 months ago with a 2-...
user32213
4
votes
1
answer
113
views
Long distance running - energy gels types & options
I'm kinda lost in all those energy gels options we have nowadays. I used to run marathons and back then there were just a few options and the main thing was whether or not it had caffeine in it.
Now ...
- 298
1
vote
2
answers
170
views
Is there a maximum energy limit an average human can possess?
Often in movies, it is shown that a human body can possess an incredible amount of energy by bio-experiments. However, is there a proved maximum energy limit an average human can possess without any ...
Jayesh Sonkusare
-2
votes
2
answers
116
views
Is there a way to know what causes our muscles to give up during exercise?
Usually my muscles give up during exercise, however i want to know whether it is caused by lack of energy or muscle damage, Is there a way to know what causes our muscles to give up during exercise? ...
- 205
2
votes
1
answer
95
views
Max Energy for Performance
Not taking into account any supplements like BCAAs, caffeine, etc, how can I best optimize myself for solid energy for 1-1.5 hours of a workout, whether weight training or cardio or a mix of the two?
...
- 21
1
vote
0
answers
78
views
What foods or substances can feed your muscles with energy without feeding the bad bacteria in your guts?
Many pathogenic bacteria (those promoting inflammation, insulin resistance etc) and fungi in the gut microbiome feed on sugar and starches (perhaps some good bacteria can feed on these too, I don't ...
- 121
2
votes
1
answer
115
views
What's the highest heart rate that I can exercise and still be very fresh for work?
Walking and cycling to work can be healthy and can save money. Exercise is even known to improve productivity. Since tiredness affects job performance especially if it's a physical job, it's very ...
- 391
0
votes
1
answer
70
views
Amino Energy whilst & post Workout
I take half scoop Grenade pre-workout and then I start the session with Weight Training (~1hr) after which I take black coffee and then move to core/cardio routine (~20-30 mins). Post that I take 2-...
- 3
8
votes
2
answers
2k
views
Can bodyweight exercises induce body recomposition?
Here's my wacky theory. The human body is extremely complex, but looking at it as a black box which aggressively adapts to external challenges, could performing bodyweight exercises (with added ...
- 81
1
vote
1
answer
195
views
Twitching/shaking after intense exercise? How to lessen it?
So I am emasculated by the roid boys at the gym who can grind through dozens of sets and look like they're just starting their workout after spending days in the sauna. I often have to compensate for ...
user25588
5
votes
1
answer
180
views
Why does a giant surplus in calories result in immediate strength gains?
I notice that days where I don't eat much, I sometimes fail to get up big lifts with weights.
On days when I sometimes get big surpluses, such as big feasts/etc., I feel powered and like there's lots ...
- 51
0
votes
1
answer
119
views
Creatine at its Finest
Hello Im new to this website and Im sure that everyone here frequently gets asked about Creatine. Currently I have been taking C4 Cellucor along with Creacore Creatine by MuscleTech. I weigh 171 and I ...
- 33
1
vote
4
answers
185
views
Energy shortage before workout
I am 22-year-old software developer that started with fitness one and a half year ago and I am looking for some advice.
Some info
Starting weight: 86 kg - 189 lbs Actual weight: 73 kg - 160 lbs
...
- 127
0
votes
1
answer
284
views
Feeling exhausted after swimming
I've been swimming for 5 hours straight. Now I'm out of the pool and I've been out for an hour. I have homework but I'm extremely sleepy. I've read why this is caused, mainly:
The cold temperature in ...
- 101
0
votes
2
answers
110
views
What causes a greater rate of calorie burn during an activity?
What causes more calories are burnt per min during an activity? Is there a list of all major factors? Ideally answers should be scientifically proved or backed but if not then just a list / ideas what ...
- 111
5
votes
1
answer
230
views
Does running on trails require substantially more energy than running on roads?
I've been running on trails for almost five years now. On my high school cross country team, we had a historic rule of thumb: Running at X-minutes per mile pace on trails requires the same amount of ...
- 232
1
vote
0
answers
83
views
Do you burn fat directly if you only eat protein? [closed]
If you only eat protein and workout with weightlifting, does your body burn fat for energy or digest your muscles or use the protein you’ve eaten?
- 199
1
vote
1
answer
202
views
Low Body Fat Energy Levels [closed]
I follow a paleo-style diet and eat 3 big meals a day with occasional snacking on fruits or nuts. In addition, I exercise both cardio and weight-lifting 5 days a week. Ever since getting on paleo, my ...
- 173
0
votes
1
answer
71
views
Energy low after weight loss
During two quite active weeks, I lost about three kilos. After those weeks, I have been feeling low on energy, and more affected by how much food I have eaten the last few hours than before.
In other ...
- 484
-1
votes
1
answer
88
views
How to stay energetic after work
I am very energetic when it comes to work. But once I reach home why I feel so tired that I can't focus on anything except sleeping. What could keep me going and keep me energized after office?
- 153
4
votes
1
answer
129
views
Lacking the amount of energy that needs for a good workout at gym
I daily plan to workout and hit at the gym but I come home fully exhausted. I lack the amount of energy that needs for a good workout at gym. How can I cope up with this? Anything that could keep me ...
- 153
8
votes
1
answer
351
views
How do calories per distance vary with speed: walking, running, and sprinting?
In The Story of the Human Body on p. 85, it claims that running an equal distance at two different speeds uses equal calories:
In fact, a running human's legs store and release energy so ...
- 249
3
votes
1
answer
312
views
What is this seemingly random value when working out calories burned?
I've tried to keep this question as non-programmer-friendly as possible, but please let me know if you don't understand something.
I'm a software developer and I'm looking over some old code and I ...
- 131
1
vote
2
answers
100
views
Is it normal to feel very tired, nauseous a few minutes after a workout?
I find that when I really push myself, my body doesn't reward me.
This occurs usually only when I am doing upper body workouts.
I feel like I am pushing myself and I can really feel my arms burn. ...
- 281
3
votes
1
answer
125
views
What is the impact of mycoprotein on muscle development?
Vegetarian swimmers in Egypt are routinely given mycoprotein as a way of building muscle and as a substitute for animal protein. Is mycoprotein known to improve swimming performance and muscle ...
- 419
0
votes
2
answers
79
views
Energy intake and expenditure [closed]
I was reading below and have a doubt.
http://www.nutrition.org.uk/nutritionscience/energy/energy-intake-and-expenditure.html?start=5
So to lose weight "energy in" should be less than expenditure . ...
- 215
6
votes
2
answers
581
views
What is the best time for "me" to exercise?
Some people have argued that morning is the best time to hit the gym but for me personally this has not worked out. I am not a morning person, when I get up I am usually hungry and after breakfast I ...
- 183
-2
votes
1
answer
221
views
How does 200g of toast relate to 500g of weight loss? [closed]
When I look at my 'calorie counter app' it says that two slices of Peanut Butter Toast (assuming 200g) are roughly 1427 kJ of energy.
Then when I look at this post - I see a rule
There are a ...
- 97
1
vote
2
answers
148
views
How to Change My Diet When I Add Exercise
I'm naturally built and toned, and I was a swimmer. My arms have retained that, but through college my stomach has put on some weight. I'm now around 200 pounds at 5'10". Some is probably due to ...
- 113
0
votes
0
answers
306
views
Ketone bodies vs glycogen cycle
I'm doing some analysis about the body deriving energy from ketones vs glycogen. I'm looking for data about how much more/less (I'm guessing less) ketone use is vs glycogen in terms of oxygen ...
2
votes
1
answer
51
views
Does energy intake before training influence motor skills and concentration?
I was playing table tennis with an empty stomach today and I wasn't concentrated and my game lacked accuracy. Is there a link?
- 123
2
votes
2
answers
131
views
Post workout supplements?
I have moved to a different city and joined the gym yesterday, last night my workout consisted of 15 minutes running on the treadmill at 10 mph with a 3% incline and 3 sets of leg presses, 35 ...
- 417
0
votes
2
answers
69
views
Exhuastion before and after workout [closed]
I have been working out for 2 weeks and I have noticed that I am very lazy. Even though I take supplements I tend to stay so lazy that except for gym time, I don't get off the couch. Except the gym, I ...
- 218
2
votes
3
answers
2k
views
Is it true that more calories give more energy, plain and simple?
I am asking this because I read a post jokingly titled, "Why fat people will hurt you."
It mentioned there that, because heavier or obese people tend to eat more, they tend to store more energy. With ...
- 29
3
votes
2
answers
194
views
How to fill body with energy before climbing?
I go climbing on Sundays (starting at 2-3PM). Climbing is a very energy-consuming process and I need to have my body filled with energy, so I don't feel irresistable urge to eat after couple of hours ...
- 151
1
vote
3
answers
99
views
Cardio: Energy boost and improved fitness
I do cardiovascular work for two reasons of equal importance...
For the betterment of my fitness
For the post-workout increase in mental energy and well being
I usually do some intervallic type ...
user8109
4
votes
6
answers
21k
views
Lost 4 kg after 1st month of gym, then it stopped and I did not lose a pound after that. Was my second month of training a total waste? why is that?
I joined the gym 2 months ago. Today was the end of the 2nd month. As had I lost 4 kg at the end of 1st month, I was so excited to see an even smaller number on the scale today. Shockingly, I have not ...
2
votes
1
answer
1k
views
Muscles fibres, hypertrophy and energy systems
I've asked a few questions on this site about, and have been doing some reading, on:
muscle fibre types (slow twich and fast twitch)
hypertrophy (myofibrillar and sarcoplasmic)
energy systems (ATP-PC,...
- 83
1
vote
3
answers
44k
views
C4 and Creatine together
I have used C4 before, with strong effect I might add, never really used creatine. I was wondering since C4 already has some creatine in it, is it ok to use them at the same time and will it possibly ...
- 335