A fitness expert explains how to perform five of his top-recommended standing ab exercises for a slim waist in 30 days.

You would do 10 crunches, 10 bicycle crunches ... perfect move for beginners who want to practice engaging their core. Stand up straight with your hands behind your head. Lift your right knee ...

5. Standing Bicycle Crunch Muscles worked: obliques, core, hip flexors Exercise: A variation of the bicycle crunch that intensely works the obliques without the need to lie on the floor.

Bicycle crunches are a great exercise for building core strength in runners – and are harder than they look. The exercise is a variation of an ab crunch, where one leg flexes while the other ...

Continue to alternate. Complete 3 sets of 15-20 reps on each side. "The standing bicycle mimics the floor-based bicycle crunch but offers more engagement from the legs, improving caloric burn and ...

Bicycle crunches are a great exercise for building core strength in runners – and are harder than they look. The exercise is a variation of an ab crunch, where one leg flexes while the other extends.