If you've ever wondered (mid-crunch, most likely) exactly how many sit ups you should be doing every day to optimise your fitness, then you're in the right place - this is exactly the type of ...

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.

The zombie sit-up isn’t for the faint of heart; to find out more, I added it to my workouts for a week and felt the difference in my abs.