Now, instead on crunching the regular way, crunch sideways by bringing the elbow to the opposite knee. ... Do not bend your head or chest while crunching. Aim to touch the elbow to the opposite knee; ...

Resting one of your forearms on a bench, assume a plank position with a straight line between your head, glutes and heels.

To make the bicycle crunch harder, pause the movement at the top of the crunch — when your elbow and knee are touching. Hold the move for a couple of seconds before alternating sides.

Lift your right knee up to your chest as you bring your left elbow down to meet the right knee. Then bring the left knee up and crunch the right elbow down to meet it. Continue alternating sides.

Core strength testing has come a long way from the straight-legged, twisting sit-ups used before World War II. We've moved on to bent-knee sit-ups, to crunches and now to the plank pose or hanging ...

Exercise: Hip Hop elbow-to-knee side crunch This exercise is being demonstrated by Janice Salerno, fitness coordinator and group fitness director at the Joan and Alan Bernikow Jewish Community ...

Crunch the left elbow down toward the left side of the body and and bring the left knee up toward the elbow. Repeat this 10 times and then switch to the right side. Stephanie Mansour ...

Standing bicycle crunches strengthen your core while improving your balance — and they’re not just for cyclists. Learn how to do this ab exercise that’s great for just about anyone.

A fitness trainer shared how many crunches people should be able to do according to their age. Here's what to know about the main benefits of the exercise.