Certified strength coach (NSCA-CSCS) and former D1 swimmer based in San Diego. After tearing his rotator cuff in 2019, Marcus got into reviewing recovery gear, wearables, and home gym equipment, and never stopped. He's logged over 2,000 hours testing fitness trackers and can tell you which treadmill belts squeak after six months. Believes most supplements are overpriced and most lifters undersleep.