I did weighted sit-ups every day for a week — here's what happened

What are weighted sit-ups, how do you do weighted sit-ups, and what are the benefits? Read what happened when this writer did them for a week

5 Lessons From Doing 100 Squats a Day, Press Ups & Sit-Ups

5 Lessons From Doing 100 Squats a Day, Press Ups & Sit-Ups

I did a GHD sit-up every day for a week — here's what happened to

What Happens to your Body When You Do 100 Sit Ups Every Day for 30

This is What Happens When You Do 10, 50 and 100 Sit-ups Every

1000 Sit-Ups A Day For 30 Days

I did 70 Turkish get-ups every day for a week to…

I did barre workouts every day for a week — here's what happened

Crunches Exercise: How To Do a Crunch For the Best Ab Workout

I tried Tom Platz's leg workout — here's what happened

4 Ways to Do Sit Ups - wikiHow