10 Best Workout Apps of 2026, Tested by Personal Trainers

Amy Eisinger, MA, CPT, a personal trainer and former SELF editor, tested the Apple Watch Ultra for about a week. She wore it for working out, commuting, sleeping, and every activity in between. Prior to testing the Ultra, she was already very familiar with Apple Watches—she’d owned the Series 4, 6, and 7. Best Men’s […]