MW Editor-in-Chief
BS Exercise Physiology, NSCA-CSCS, 9 years supplement research, 2,000+ PubMed reviews
Marcus has a background in exercise physiology and spent four years as a strength coach before spending the last nine reviewing supplements. He got obsessed with the gap between what supplement companies claim in their marketing and what the studies they cite actually say — in many cases, the study used a completely different dose than the product, or tested a different population, or was funded by the ingredient manufacturer. He started tracking third-party testing certifications in 2018, when a popular pre-workout tested positive for a banned stimulant despite a "clean ingredients" label. Now every product he reviews goes through a literature check on PubMed, a label verification against known clinical doses, and a check of the manufacturing facility's cGMP status. He has a BS in Exercise Physiology from University of Wisconsin and holds NSCA-CSCS certification. He's been personal training for 12 years and has direct experience with most of the supplement categories he covers.
9 years of experience in supplement science.
Compare 5 kids' omega-3 supplements by DHA dose, IFOS certification, and real palatability data. Age-specific dosing tables for ages 1–18 included.
Tested 8 weeks: Legion Pulse delivers clinical doses, 350mg caffeine, and Informed Sport certification. Is $2.19/serving worth it? Full 2026 analysis inside.
Gorilla Mode Pre-Workout reviewed: 400mg caffeine, 10g citrulline, 5g creatine monohydrate. Full 2026 formula breakdown, third-party testing, and honest verdict.
Compare 5 glucomannan supplements with real dosing data, price-per-serving, and the science behind EFSA's only approved fiber weight-loss claim.
Reset caffeine tolerance with a proven protocol. Best stim-free pre-workouts for cycling, withdrawal timeline, and how to reintroduce caffeine sensitivity.
7 nootropic pre-workouts ranked by Alpha-GPC dose, caffeine-theanine ratio, and third-party testing. Find the best pre-workout for focus in 2026.
Compare the 5 best vegan protein powders for muscle building in 2026. Amino acid profiles, leucine data, and certified picks from $0.32/serving.
Compare creatine loading vs. daily dosing using peer-reviewed evidence. 5 top products ranked by dose accuracy, testing status, and price-per-serving.
Compare magnesium glycinate, citrate, and threonate by dose, bioavailability, and price — find the right form for sleep, cognition, or daily repletion.
Discover which fish oil brands pass oxidation testing — TOTOX values, IFOS certification, and 5 products ranked by real third-party lab data. Updated 2026.
Ranked: 6 natural pre-workouts with no artificial sweeteners, colors, or flavors. Clinical doses, NSF certs, and price-per-serving breakdowns for 2026.