Your answer lies in your own question:
I'm a bit of a couch potato with a sedentary job, who normally gets out of breath walking up a few flights of stairs.
Recently I saw an article on TV about an 82 year old guy who has been hill running for decades, and still goes out every day.
Stamina is something that can be trained like everything else. As @...
If you are really interested in the biology behind fitness then I'd suggest reading Dr. Jack Daniel's "Daniel's Running Formula". I'll paraphrase a few of the points you would read there.
The goal is to get oxygen from the air to the muscles that need it. There are several systems involved in this process.
Quite simply, how much air can ...
You hit on some common misconceptions, but you also hit on some truths. For instance, you compare the human body to inanimate objects with respect to damage, but you also accurately point out that
Obviously, living organisms are not the same as inanimate objects
So, what's the difference?
The repair process
Man-made objects tend to wear out faster with ...
EDIT: Since "fit" is a very arbitrary term, I should include my definition, since the asker did not.
From the starting point of a 50kg man, I consider fit to include
gaining quite a lot of weight, mostly muscle
correcting most, if not all, posture imperfections and muscular imbalances
learning proper form in all exercises, and learning how to utilize ...
Cardiovascular endurance and general conditioning.
Simply put, the body will adapt to whatever your regular activities are. The fuel that you provide your body with also plays a part, but your conditioning is what makes the biggest difference. Muscle size is largely irrelevant to something like walking, but it can help if you were trying to sprint faster. ...
I'm curious to know what makes him (and the walkers I saw) "fit" - where does his stamina comes from? He was stick thin like me, so I guess muscles don't play a huge role in it. I can only assume it's down to heart and lung efficiency?
Well, a quick look at that man's body may not have given you an accurate enough picture of his body's composition. He ...
You are asking about the effects of a sedentary lifestyle. This is certainly related to physical fitness, or rather a lack thereof, contrary to what some of my fellow members here feel.
There are a number of physiological adaptations that will result from too much inactivity.
I like to say that our bodies are built to be as lazy as possible. Efficiency ...
It's important to keep one's legs in good working order for anyone who wants to retain the ability to get out of bed, climb stairs, stand up off the toilet, walk around a hilly neighborhood, run away from a fire or other emergency, or sit down to play with a child on the floor. People who are okay not being able to do these things without someone else's help ...
At a first glimpse the standing desks seem like another "improvement" companies throw to an item to make customers upgrade and re-buy the same thing. Essentially it's just a desk, right? That's what I thought until I started my current job which provided me with a standing desk.
My job is sedentary and very static. I experimented and on some days remained ...
A recent meta-analysis of 23 published studies is MacEwen, MacDonald, and Burr, "A systematic review of standing and treadmill desks in the workplace," Preventative Medicine 70(January 2015):50-58.
The article is here: http://dx.doi.org/10.1016/j.ypmed.2014.11.011
Quoting from the paper's summary:
Treadmill desks led to the greatest improvement in ...
This is an interesting question that had me thinking for a while. It's difficult to answer "why" exactly, other than saying "it is that way", so I'll try to describe the need for exercise and a few benefits it gives. @Alec's answer has neatly addressed your questions about wear and tear so I won't address those.
One of the things humans ...
There is no set/rep scheme for overall health. That's like asking which computer mouse best prevents cancer.
If you want functional strength, do functional exercises.
There is nothing scientific why one would walk 10.000 steps over let's say, 8.000 steps or 12.000 steps. It dates back to somewhere in the 1960s, by a company in Japan. They created a product which name would be "10.000 steps meter".
Studies later confirmed that people who walk 10.000 steps a day have lower blood pressure, more stable glucose levels and ...
We evolved to find calorie-dense foods very tasty, and we don't have taste-receptors for micro-nutrients
When humans (and most of their predecessors) did most of our evolving, low-calorie plants were plentiful. Sweet fruit wasn't usually around all year. Meat could be hunted, but it required plenty of energy and effort, and was usually quite lean. (Much ...
I know that bodybuilding makes you heavier, stronger and more attractive, but is it really beneficial for one's health in the long run?
Bodybuilding is not strength training.
Bodybuilding is a very specific practice to improve one's looks. Strength training, by contrast, is training to improve the capabilities of one's body. Strength training is the ...
First let's look at what your acquaintance actually does to the diet itself.
Suppose that his normal TDEE is 2500 kcal. That means, at his regular activity level given his job and physique, training not considered, he'd need about 2500 kcal per day to supply his body with the energy it needs. Eating that, there would be neither weight gain from excess ...
Probably about 2 years. That said, enjoy the journey.
You get benefits along the way.
Training can be fun.
Some of the biggest gains come at the beginning.
A few extra thoughts:
Train safe. Injury setbacks are the worst hurdle.
Start very light. Plenty of time to amp up the intensity over the next two years. It keeps you safe when you are a novice, ...
I'll attack this from two angles. The potential and the actual.
This is the more obvious. A major benefit of being previously trained is becoming trained again is much easier. In other words, "muscle memory."
Ideally, you will start exercising again at some point. You will gain muscle more easily than if you never trained.
Furthermore, you will ...
There's a 2005 study, and plenty of others, that show a clear dopamine release when sugar is ingested. This one shows that (in rats) it's on par with addictive narcotics.
These results suggest another neurochemical similarity between
intermittent bingeing on [sugar] and drugs of abuse: both can
repeatedly increase extracellular [dopamine].
This 2013 ...
Yes, it's entirely possible.
Exercises such as squats are compound muscle exercises, which means they work many muscles at the same time. These are generally considered as "must have" because they do work so many muscles, and generally give good results.
The other exercises are what are called "isolation" exercises, since they mostly work one muscle group ...
The bottom line is you want your shoulder in a neutral position. That doesn't necessarily mean full scapular retraction, but it's a cue that helps a lot of people.
Considering your level of experience, and the fact you came off of injury I would advise you to use that scapular retraction, but only to the point where your shoulder is in a neutral position.
Though it's a very general question, here's a few guidelines I follow for a healthy life:
Go active. The Western culture have become way too inactive, a way of life our body is not accustomed to. Especially if you spend hours in a deskjob, make sure you exercise or perform some jogging on daily basis. Saying that, you shouldn't go hard & heavy everyday.
Consider a knee:
The meniscus absorbs much of the shock of jumps and landings.
Tears in the meniscus is a common cause of surgery.
Sports with high risk of meniscus tear include american football, soccer, basketball and wrestling.
Altough running is high impact this injury do not seem to be common here.
Rather it seems that rotation of the knee and ...
Some exercise is indeed better than no exercise. Calisthenics would be a fine choice, as would yoga, dumbbell work, running, or some combination of those options. Anything is better than nothing.
If you have half an hour, then twenty minutes of yoga to limber up before doing a bunch of push-ups, air squats, and pull-ups would probably hit the spot. If you ...
Step 1: consult a doctor to determine:
If it's really hemorrhoids
The severity if it is
And the protocol to remedy it.
If the hemorrhoid was caused by lifting, then know it won't get any better if you continue lifting the way you do. You can work through minor hemorrhoids, but refine your technique.
Step 2: fix your form
You'll find that you need to ...
Unfortunately, for sake of a good answer, this could be so many different things. I'll try to highlight/mention as many as I can. To start, my best advice would talking with a good MD and ask about blood testing. That being said when the results come back I would recommend asking lots of questions and even consider having multiple MD's look at the results ...
It's just not OK but is also recommended. When you end your exercises your body needs food, especially proteins and good carbs !! But i won't enter in nutritional aspects of this because your question appear to be about hygiene.
It's ok to eat if you just wash your hands, there's no harm on that because normally the rest of your body won't touch your food ...
Research is pretty divided. On one end, there are claims that it reduces performance and muscle growth by slowing muscle reaction and displacing calcium:
Regular intake of caffeine reduces your muscles strength and resistance training performance by slowing down the muscle contraction and relaxation cycle.
High intake of caffeine also displaces calcium ...