Let's kill the biggest myth first: you cannot spot-reduce belly fat. No ab exercise, wrap, or "lower-belly workout" burns the fat sitting on top of your abs. Belly fat is just where men store the last of it — which means it's the final thing to leave, and the only way to it is through overall fat loss.

The good news: fat loss after 30 isn't harder because your metabolism collapsed. The research on metabolic decline with age shows it's far smaller than advertised until much later in life. What changed is your life — less incidental movement, more stress, less sleep, more meals you didn't cook. Those are system problems. Systems can be engineered.

The deficit that survives a real life

A 300–500 calorie daily deficit is the sweet spot: fast enough to see monthly progress, small enough that you don't white-knuckle every evening. Bigger deficits work for two weeks and then fail for two months. I treat it like uptime: a boring deficit that runs for 6 months beats a heroic one that crashes in 3 weeks.

Protein is the keystone

In a deficit, protein does three jobs: it protects muscle (so the weight you lose is actually fat), it's the most filling macronutrient per calorie, and it costs more calories to digest. Anchor every day at 0.7–1g per pound of your current body weight — here's how to find your number.

Lift 3 days. Walk every day.

You don't need a 6-day split. Three full-body sessions a week is enough lifting stimulus to tell your body "keep the muscle" while the deficit drains the fat. Then walking — unglamorous, infinitely sustainable — does more for your daily calorie burn than the cardio you keep skipping. 8–10k steps is the engineering spec.

What I'd ignore

  • Fat-burner supplements — the effect sizes are tiny and the good ones are just caffeine in a $60 bottle.
  • Fasted cardio — fine if you like it; the research shows no meaningful fat-loss advantage over fed cardio at equal calories.
  • Cutting carbs to zero — a deficit in disguise that also wrecks your training. The deficit is doing the work, not the carb-fear.

The honest timeline

At a pound a week, a guy carrying 25lbs of extra fat is looking at ~6 months. That number disappoints people, which is why nobody selling something says it. But 6 months from now arrives either way — the only question is whether the system was running.