lower abs?

jimbell asked: I run 5-10k 5 times a week, and I do weight training and sit ups for at least half an hour 5 times a week, but I’ve noticed that my lower abs are getting kind of pudgy.It is not bad, and they are still relatively firm, but not as firm as they [...]

What is better, losing weight then gain muscle or use the fat I have to become muscle?

Carlos b asked: Basically I am male 19 years old and weigh approximately 255 lbs, I want to lost the fat weight healthfully and gain muscle
I also want to make weight for boot camp regulations, which at my height at 6 feet is 213 Lbs. Because I do want to join the Marines.
So can some [...]

Does sweating profusely while exercising mean that you are losing fat weight?

Pao27 asked: I mean, if you sweat, it means that you are hot, which means that you are burning calories, right?
If so then the more you sweat, the more weight you’re losing?
And then, why are all those sauna suits for? In what way do they help you lose fat and become skinnier?
Look at the second [...]

Is a healthy diet more important when you are young or when you are old?

marc asked: Are there any reliable studies on this issue? On the one hand, I can see how a healthy diet when you are young might set in motion some long term positvie health benefits. On the other hand, it may be the case that children’s bodies are so efficient at squeezing the nutrition out [...]