Stephanie Sanzo is a Sweat app fitness trainer with 2.2 million Instagram followers. She used to take protein powder and pre-workout supplements, but she believes they irritated her IBS. Visit Insider ...

Equipment needed: one dumbbell⁣⁣⁣⁣, mini resistance band⁣⁣⁣⁣, and a bench, chair, or couch⁣⁣⁣⁣. Directions: Before beginning the workout, be sure to do a five-minute warmup. For this workout, complete ...

Many fitness influencers promote workout supplements and protein powder, but Stephanie Sanzo doesn't. In fact, the Australian Sweat app trainer, 34 hasn't taken protein powder or pre-workout ...