1RM Calculator: Find Your One-Rep Max Safely
Estimate your one-rep max without maxing out. Our free 1RM calculator uses proven formulas — plus a safe testing protocol and training zones.
Estimate your one-rep max without maxing out. Our free 1RM calculator uses proven formulas — plus a safe testing protocol and training zones.
Try our free BMI calculator to get your body mass index in seconds — plus the formula, healthy ranges, and what your number actually means.
Use our free TDEE calculator to find your daily calorie burn. Learn the Mifflin-St Jeor formula, activity multipliers, and how to set your target.
What is a healthy body fat percentage? Learn 5 ways to measure it, ideal ranges for men and women, and how to lower it without losing muscle.
Heart rate zones explained: the 5 zones, how to find your max HR, and the truth about the fat-burning zone. Includes a free zone calculator.
Sharon Osbourne weight loss headlines have centred on Ozempic for years. Here’s what she’s actually said about losing 42 pounds, going “too far,” and resuming treatment in 2026.
Does apple cider vinegar for weight loss actually work? The evidence is thin—here’s what the research really shows, plus safety considerations before you try it.
Is reformer Pilates good for weight loss? Yes, though differently to cardio—see how many calories it burns, how it compares to mat Pilates, and how often to practise.
Is boxing good for weight loss? Yes—see how many calories a session burns, why it beats steady cardio for preserving muscle, and how to get started.
Is rowing good for weight loss? Yes—see how many calories it burns, why it engages 86% of your muscles, and how to structure sessions for real results.