Who knew that having your butt up during a plank was actually a whole new exercise? This ab circuit, which works that exercise into it, will tighten your tummy and have you ready for crop top season in no time.
5 Beginner Yoga Poses For Strong Arms (+ a freebie!) - Social Hermit Yoga for beginners - check out these 5 beginner yoga poses for stronger arms. Click through to get a free pdf with more modifications.