Most men can meaningfully increase their testosterone levels through a combination of resistance training, better sleep, weight management, and targeted nutrition. The size of the improvement depends on where you’re starting: a man who’s sleep-deprived, sedentary, and overweight has far more room to gain than someone already living a healthy lifestyle. Before chasing a number, it helps to know what’s normal. Total testosterone for men in their 40s typically falls between 252 and 916 ng/dL, with the range shifting downward as you age (215–878 ng/dL in your 50s, 196–859 ng/dL in your 60s).
Lift Heavy Weights Consistently
Resistance training is the single most reliable way to raise testosterone through behavior change. The type of lifting matters. Compound movements that recruit large muscle groups, like squats, deadlifts, and bench presses, produce a stronger hormonal response than isolation exercises like bicep curls. A well-studied protocol uses four sets of 10-rep-max squats with 90 seconds of rest between sets, and research from the Journal of Applied Physiology shows this type of session reliably spikes both total and free testosterone in the hours afterward.
For long-term gains, variety in your training intensity appears to be key. A 10-week periodized program studied at the same lab rotated between heavy days (3–5 reps with 2–3 minutes of rest), moderate days (8–10 reps with 1 minute of rest), and explosive power days (6–8 fast reps at a lighter weight). Younger men on this program saw increases in resting free testosterone, while older men experienced a significant increase in exercise-induced total testosterone along with a drop in resting cortisol, the stress hormone that works against testosterone.
Three sessions per week is enough. You don’t need to live in the gym, but you do need progressive overload, meaning the weights should get heavier over time. If you’re currently sedentary, even a basic strength program will produce noticeable hormonal changes within the first couple of months.
Sleep Is Non-Negotiable
Your body produces most of its testosterone during sleep, particularly during deep sleep cycles in the first half of the night. Cutting sleep short has a surprisingly large effect: getting just five hours per night lowers testosterone by 10 to 15 percent compared to a full night’s rest, according to research from the University of Chicago. That’s roughly the equivalent of aging 10 to 15 years in terms of testosterone output.
The fix is straightforward but harder to execute than it sounds. Aim for seven to nine hours of actual sleep, not just time in bed. Consistent sleep and wake times matter more than a single good night. If you’re regularly getting six hours or less, improving your sleep may deliver a bigger testosterone boost than any supplement on the market.
Lose Excess Body Fat
Carrying extra weight, especially around your midsection, actively suppresses testosterone. Fat tissue contains an enzyme that converts testosterone into estrogen, creating a cycle where more fat leads to lower testosterone, which in turn makes it easier to gain more fat. Men who are obese often have testosterone levels 30 to 50 percent lower than lean men of the same age.
The good news is that losing weight reverses this. You don’t need to reach single-digit body fat. Getting from obese to a healthy weight range often produces a substantial rebound in testosterone. Crash diets aren’t the answer, though. Severe caloric restriction itself can tank testosterone. A moderate deficit of 500 calories per day combined with resistance training preserves muscle and supports hormonal recovery.
Cut Back on Heavy Drinking
Moderate drinking, defined as up to two standard drinks per day for men, doesn’t appear to cause lasting damage to testosterone levels. Heavy drinking is a different story. Consuming more than 15 drinks per week is enough to damage the Leydig cells in your testes, which are the cells directly responsible for manufacturing testosterone.
The speed of this damage is striking. In one study, healthy men given a pint of whiskey per day saw their testosterone levels start dropping by the third day. By the end of 30 days, their levels resembled those of men with chronic alcohol use disorder. If you’re drinking heavily and wondering why your energy, libido, or body composition has changed, alcohol is a likely contributor.
Fix Nutritional Gaps
No food or supplement will double your testosterone, but specific nutrient deficiencies can hold your levels down. Correcting those deficiencies removes a bottleneck.
Vitamin D is the best-studied example. A meta-analysis of 15 trials found that vitamin D supplementation significantly increased total testosterone, but only when taken at doses above 4,000 IU per day for longer than 12 weeks. Lower doses or shorter durations didn’t produce a meaningful effect. This is most relevant if you’re deficient, which is common among people who live in northern climates, work indoors, or have darker skin. A simple blood test can tell you where you stand.
Zinc plays a direct role in testosterone production, and even mild zinc deficiency can lower levels. You can get enough through foods like red meat, shellfish, pumpkin seeds, and chickpeas. Supplementation at around 30 mg per day has been studied, though the evidence for testosterone improvement in men who aren’t deficient is weak. The same is true for magnesium, which supports hundreds of enzymatic reactions in the body including those involved in hormone production. Most men don’t get enough magnesium from food, so supplementing 400–450 mg per day is reasonable regardless of testosterone goals.
ZMA supplements, which combine zinc, magnesium, and vitamin B6, are heavily marketed for testosterone boosting, but the research doesn’t clearly support that claim in men who already have adequate levels of these nutrients.
Manage Chronic Stress
When your body is under sustained stress, it prioritizes producing cortisol. Cortisol and testosterone have an inverse relationship: when one goes up, the other tends to go down. This isn’t about occasional stressful events. It’s about the chronic, grinding stress of overwork, poor relationships, financial pressure, or overtraining that keeps cortisol elevated day after day.
The practical interventions here overlap with everything above. Regular exercise lowers resting cortisol (the 10-week training study showed this explicitly in older men). Better sleep reduces cortisol. Losing excess weight reduces systemic inflammation that drives cortisol. Beyond those, anything that genuinely helps you decompress, whether that’s walking outside, spending time with people you like, or just having unstructured downtime, contributes to a hormonal environment that supports testosterone production.
When Lifestyle Changes Aren’t Enough
If your total testosterone is consistently below 300 ng/dL on morning blood draws and you’re experiencing symptoms like persistent fatigue, low libido, erectile dysfunction, or loss of muscle mass, you may have clinical hypogonadism. This is a medical condition, not a lifestyle problem, and it requires evaluation by an endocrinologist or urologist. The workup typically involves two separate morning blood tests (testosterone peaks in the morning and drops throughout the day) along with tests for related hormones to identify the underlying cause.
Testosterone replacement therapy is effective for men with a confirmed diagnosis, but it comes with trade-offs including reduced fertility, potential cardiovascular considerations, and the reality that once you start, your body further reduces its own production. For men whose levels are low-normal rather than clinically low, the lifestyle strategies above are the first and most important step. They work, they’re free, and they improve your health in dozens of ways beyond testosterone.