Lifting things that are too heavy... pushing too hard. Flexing out, and I think doing this specific workout for your stomach too much.
Answer:
30%
No more than 30% of calories should be from fat, so take the total calories and multiply by 30%.
Explanation:
The Institute of Medicine and the American Heart Association recommends a total fat intake of 25-35 percent of calories.
Answer:
It should be challenging to you
