699 reputation
310
bio website twitter.com/lucaswiman
location Mountain View, CA
age 31
visits member for 1 years, 10 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
3
answered Concentrated calories in a small snack as energy boost before gym
Jan
1
answered How to reduce my obesity?
Jan
1
answered Why are my ribs sore after doing push ups and sit ups?
Dec
30
awarded  Critic
Dec
28
answered Do I need to lose more weight ? My BMI is 21.5
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.
Dec
12
answered Can glycogen only be used by the muscle in which it is stored in?
Dec
10
awarded  Supporter
Dec
5
answered To lose a lot of fat mass, should I lift weights, do cardio, or both?
Nov
28
answered Is it true that you can eat anything you want within 15 minutes of working out without putting on weight?
Nov
26
revised Exercises to recover from mild pain around the 3rd lumbar vertebrae?
Add forgotten pose
Nov
26
answered Exercises to recover from mild pain around the 3rd lumbar vertebrae?
Nov
4
awarded  Necromancer
Nov
3
revised Guidance on my current diet and workout routine
fix typo and add emphasis
Nov
3
answered What are the best benefits of yoga (versus cardio and weight training)?
Nov
3
answered Calorie calculations for weight reduction