AEL is based on the understanding that a muscle is able to exert more force (+20-50%) during a lengthening contraction than the coupled shortening contraction. In other words, it’s easier to lower a load than it is to lift it.

The sit-up and the crunch are commonly performed exercises for targeting the rectus abdominis (RA) muscles, a.k.a. the six-pack muscles . . .

We considered all the variables that make a gym “hardcore” and constructed a list of the ten hardest gyms in the States.

If you’re a meathead, gym bunny or fitness freak planning a visit to the Big Apple soon — do not fret — I have your gym search covered. Listed are my top choices for day pass gyms.