NEAT (Non-Exercise Activity Thermogenesis)

NEAT: what is it?

NEAT is the component of energy expenditure that quietly decides whether a diet works. Training three or four hours a week is a small share of a client's expenditure; how they spend the other hundred-and-sixty-odd hours is much larger. It is also the component that falls without anyone noticing during a deficit, which makes it the first thing a coach should check when weight loss stalls.

How large NEAT can be

The variation between two people is striking. A construction worker who cycles to work and a remote worker who leaves the house twice a week can have similar bodyweight, similar training, and very different daily expenditure. That difference lives almost entirely in NEAT.

Why NEAT falls during a diet

When energy intake drops, spontaneous movement tends to drop with it. Clients take the lift, sit rather than stand, cut the evening walk, and move less within the day without any conscious decision. It is not laziness and it is not a character flaw; it is a normal response to eating less.

The consequence is a smaller deficit than the plan intended. A client whose steps fall from nine thousand to five thousand has closed part of their own deficit, and no amount of recalculating calories will show it. This is why step count belongs on the tracking sheet next to bodyweight.

How to program it

NEAT responds far better to a target than to encouragement. A step goal is concrete, measurable and already tracked by the phone in every client's pocket, which makes it one of the easiest habits to set and monitor.

Raise it from where the client actually is, not from a round number. A client averaging four thousand steps is not going to hold ten thousand, and setting that target teaches them they cannot follow the plan. Six thousand for a fortnight, then seven, works.

• Set a step target scaled to the client's current baseline.
• Track it week by week; NEAT drifts down silently in a deficit.
• Restore lost activity before cutting calories further.
• Anchor movement to existing routines: a walk after lunch, stairs by default.

NEAT versus adding cardio

When a client stalls, adding cardio sessions is the reflex. Restoring NEAT is usually the better first move: it does not add to training fatigue, it does not need to be recovered from, and it does not compete with the resistance training that is protecting muscle.

It also keeps something in reserve. A coach who has already added four cardio sessions in week five has nowhere to go in week ten. A coach who has raised steps from five thousand to eight thousand still has both cardio and a further calorie reduction available.