NEAT: the underrated calorie burn that happens outside the gym
NEAT (non-exercise activity thermogenesis) is the energy your body spends on all physical activity outside of deliberate exercise and sleep: walking around during the day, maintaining posture, gesturing, doing chores, even fidgeting. For most people, NEAT makes up a far bigger share of daily calorie burn than the workout itself, which typically takes up only an hour or two out of 24.
An important quirk of NEAT is that it tends to drop unconsciously during a prolonged calorie deficit — the body adaptively 'saves' energy by reducing everyday activity, often without the person noticing: less fidgeting, a slower and more economical walk, longer stretches of sitting. This is one reason weight-loss plateaus can happen even while formally sticking to a calorie deficit on paper — total energy expenditure quietly drops on its own through a compensatory fall in NEAT.
Practical takeaway: consciously maintaining everyday activity during a diet — walking more, sitting less, taking the stairs — isn't a minor checkbox, it's a real lever on total calorie expenditure, and often a bigger one than adding yet another workout to the week.