The horizontal ab squat is a core exercise that strengthens your lower abs and hip flexors without weights while remaining low impact on your joints. Take your humble bodyweight squat, flip it on its ...

Higgins also recommends hula hoop v-sits to target belly fat. Another hula hoop exercise you'll do while sitting on the floor, Higgins explains, "It's a workout that helps you build a strong core.

An expert trainer recommends this three-move abs workout for building a stronger core at home - Strengthen your abs and ...