How Many Sit-Ups Men Should Do in a Day – How to Train Ab Muscles
This classic core exercise can be done basically anywhere, anytime. So, how often should you be doing it?
How many sit-ups should you do in a day if you're performing daily sit-ups as part of your fitness routine? We have an answer – and a better plan for abs.
I did 50 reps of this sit-ups ab exercise every day for a week
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This 4-move abs workout for beginners strengthens your core in
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