Start with a proper test
Know your number before you chase it. That means at least two early-morning, fasting tests — one reading isn't a pattern.1
If both come back low and you have symptoms, that's a doctor first, not a lifestyle project.1
1. Lose the fat — the strongest evidence
Across 24 studies, weight loss in men was associated with higher testosterone, and the more weight men lost, the bigger the rise.2 Where low testosterone is down to being overweight, the Endocrine Society calls weight loss the typical first-line treatment.1
2. Sleep — a small study, a big effect
One week of under-five-hour nights cut young, healthy men's daytime testosterone by 10–15%.3 It was ten men for one week, so treat the size of the effect with care. But it's free, and it starts tonight.
3. Lift — for the muscle, not the spike
Heavy sessions raise testosterone for 15 to 30 minutes, and resting levels usually don't change much with training.4 Lift anyway: the strength and muscle show up whether or not the number moves.4
4. Ask your doctor about your medications
Some medicines lower testosterone. The Endocrine Society names corticosteroids and opioids among the reversible causes doctors should rule out.1 Don't stop anything on your own — raise it with whoever prescribed it.
What mostly doesn't work: boosters
A 2024 systematic review looked at 52 studies of 27 supplements sold as testosterone boosters. Most failed to increase total testosterone. A handful showed effects in specific groups of men, not across the board.5
That's why nothing on this site comes in a tub.
The part nobody sells you
None of this is secret. Every man reading this knows he should sleep more and carry less fat. Knowing isn't the constraint. The constraint is Wednesday — the day the plan meets the week and loses.