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BMR Calculator

Estimate adult resting energy expenditure with the Mifflin-St Jeor equation and review every equation term and limitation.

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VLaMax Calculator

Estimate maximal blood-lactate accumulation rate from pre-sprint and peak samples, sprint duration, and an explicit correction interval.

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Swim CSS Calculator

Calculate critical swim speed from 400 and 200 time trials with pace references, projected 1,500 time, and protocol checks.

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FTP Calculator

Estimate cycling FTP and W/kg from a selected field-test protocol, then review the exact multiplier and seven-zone power table.

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Carb Loading Calculator

Convert an 8-12 g/kg/day carbohydrate-loading target into daily grams, total grams, calories, meal portions, and event-fueling context.

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Sweat Rate Calculator

Calculate sweat loss and hourly sweat rate from pre/post body mass, fluid intake, urine output, and exercise duration in metric…

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Heart Rate Zone Calculator

Calculate five heart-rate training zones from measured or age-estimated maximum HR using heart-rate reserve or percent of maximum.

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VO2 Max Calculator

Estimate VO2 max from a measured Cooper 12-minute run distance, with pace and speed checks, formula limits, current evidence, and…

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