699 reputation
410
bio website twitter.com/lucaswiman
location Mountain View, CA
age 31
visits member for 2 years, 4 months
seen Apr 19 at 4:41

I've lost almost 60 pounds and significantly improved my health in the last year. I'm a nutrition and fitness nerd, and I'm always interested in learning more.


Jan
20
comment Home exercises for training for indoor rock climbing
I agree with you on all points, but I'm more specifically asking about home exercises. I also feel that my set of home exercises tends to exercise less useful muscles for climbing. (Eg I think my triceps are enormously stronger than my biceps from thousands of pushups.) The black diamond trainer looks pretty interesting. I do think my grip strength is weak, and they're pretty cheap.
Jan
4
comment What kind of cardio exercises can be performed without a gym or fitness equipment?
I know you said no equipment, but packing a jump rope shouldn't take up too much space in your luggage and is pretty good cardio.
Jan
4
comment How do I lose Weight when I weigh 345lbs?
@JohnP That said, some conditions like hypothyroidism can contribute to obesity and make losing weight extremely difficult. My mother has struggled with this for years, and getting treatment really improved her life.
Jan
4
comment How do I lose Weight when I weigh 345lbs?
@JohnP It's easy to let the perfect be the enemy of the good: most of the advice I've seen in all these answers is not exactly controversial. No one is saying she should take up Crossfit or run a marathon. The suggestions seem to range from "eat healthier" to "eat somewhat less" to "go on brief walks". It's conceivable that this could be bad advice for some obese people, but it sounds like Michelle is unlikely to seek medical help due to financial/insurance limits. Those are can be very real, especially for parents.
Jan
3
comment Back pain when coughing
I'd also add that looking at muscle charts is a godsend for focused back pain management. You can precisely target exercises and stretches to the affected muscles with a few Google searches. The iMuscle app for iOS is also great for this.
Jan
3
comment Back pain when coughing
I'd advise looking at yourself move with no shirt on in a full length mirror. Stand, walk, wear a backpack, do the stretches that help, and walk like you're hiking. Note what's different in your spine position and muscle exertion. Strengthen and stretch as appropriate. In my non-expert, non-medical opinion, it sounds like your quads, glutes and psoas are tight, so try stretching them more and strengthening your psoas. Different shoes might also help. Just my thoughts. I agree with @Informaficker that this is more medical advice than fitness.
Jan
3
comment Back pain when coughing
I'm not sure the difference between hiking and walking: level ground, off road, different shoes?
Dec
13
comment Can glycogen only be used by the muscle in which it is stored in?
Glycogen can be an enormous molecule: uic.edu/classes/phar/phar332/Clinical_Cases/… lists a molecular weight of 400kDa, which is somewhere around 2200 glucose molecules. According to Wikipedia, one molecule of glucose yields that order of ATP production. en.wikipedia.org/wiki/…
Dec
12
comment Can glycogen only be used by the muscle in which it is stored in?
Fair enough. I should have toned it down to "it seems likely that empirical studies will tend to be more informative than glycogen biology".
Dec
12
comment Can glycogen only be used by the muscle in which it is stored in?
That's why you shouldn't necessarily take glycogen too seriously if your goal is training success: it's only one component of a poorly understood, very complex system. I suspect that the physiology isn't well enough understood to answer the question of which muscles to work first definitively, but I'm sure empirical studies have been done which do answer the question definitively.
Dec
12
comment Can glycogen only be used by the muscle in which it is stored in?
It would contradict what Wikipedia says about energy usage if muscle glycogen stores were the only component of the system you're trying to exercise. Obviously that's false. There's other sources of energy released into the blood from the liver and fat cells. Additionally, tiredness is partially determined in the brain, and occurs before muscles become totally exhausted. If your brain or nerves become tired from working other muscles, you'll work later muscles less hard.
Dec
12
comment Why can extreme athletes eat so many calories without health risk?
I would also include liver and kidney function. Eating this many calories might lead to stress on the liver, as several macronutrients need to be processed by the liver in order to be used for energy (eg fructose and protein). I'm not aware of any evidence that exercise dramatically improves liver efficiency. Similarly, metabolizing this many calories produces more waste products which must be excreted by the kidneys.