Add Yahoo as a preferred source to see more of our stories on Google. Sometimes, it's good to get something for little (to no) effort. In fitness, that rarely happens. So, you can imagine that I ...

Crunches have long been the go-to exercise for a post-workout ab finisher. Not only are they simple to execute, but you can't deny the burn that comes after just a few reps. Still, as fatigue sets in, ...