Max Heart Rate Calculator: How to Calculate Your Real Max HR (And Why Formulas Alone Aren’t Enough)
McMillan Running explains that common age‑based max heart‑rate formulas—Fox/Haskell, Tanaka, Gulati, and Nes—produce varying estimates, often differing by 10‑30 beats for the same individual. Because training zones are calculated as percentages of max HR, such errors can misplace workouts across intensity zones. To improve accuracy, McMillan built a calculator that selects the best formula for a runner’s demographic and lets users override with a field‑tested max HR. The article also provides a detailed 40‑minute field test using progressive flat repeats and hill repeats to determine a true max HR.
Zone 2 Heart Rate Calculator: Find Your Aerobic Sweet Spot
Greg McMillan’s Zone 2 Heart Rate Calculator helps runners pinpoint the aerobic‑base intensity that fuels long‑run endurance. Zone 2 is defined as 55‑78% of heart‑rate reserve, where the body maximizes mitochondrial density, capillary growth, and fat oxidation. The guide explains the talk...