A free NEAT estimator for Non-Exercise Activity Thermogenesis — the calories you burn from everything except sleep, food, and structured exercise. James Levine's research at the Mayo Clinic found up to 2,000 kcal/day of variance between people based purely on how much they fidget, pace, take stairs, and choose movement over stillness. This tool walks through job type, commute, household activity, fidget level, and standing time to produce a daily NEAT figure you can add to your BMR for a much more honest TDEE.