Bench press does increase testosterone, but the boost is temporary. A heavy bench press session can raise testosterone levels by roughly 12 to 23% above baseline, with levels returning to normal within about an hour. This acute spike is real and measurable, but it doesn’t permanently change your resting hormone levels in the way many lifters hope.
The full picture is more nuanced than a simple yes or no. How much testosterone rises, how long it stays elevated, and whether it actually matters for muscle growth all depend on how you train and what you’re expecting from the response.
The Acute Spike After a Session
When you finish a bench press workout, your testosterone levels climb quickly and peak within minutes. In a study published in the Journal of Strength and Conditioning Research, hypertrophy-style bench press protocols (moderate weight, higher reps, shorter rest) produced a 20 to 23% jump in total testosterone immediately after training. Strength-focused protocols (heavier weight, fewer reps) produced a smaller but still significant bump of 12 to 14%.
The elevation doesn’t last long. In hypertrophy protocols with 60-second rest periods, testosterone remained significantly elevated at 15 and 30 minutes post-exercise but was trending back toward baseline by that point. With strength protocols, the window was even shorter. Across all protocols, levels largely normalize within 30 to 60 minutes after your last set.
This pattern holds regardless of whether you’re doing upper or lower body work. A study in the International Journal of Molecular Sciences found that five sets of bench press taken to failure and five sets of leg press to failure both produced a similar testosterone increase of about 3.8 nmol/L above baseline. Both returned to resting levels within an hour. The idea that only leg exercises trigger a meaningful hormonal response isn’t supported by the data, at least when training volume and effort are matched.
How Bench Press Compares to Squats
There’s a persistent gym belief that squats and deadlifts produce far greater testosterone spikes than upper body lifts, making them essential for hormonal reasons. The reality is less dramatic. When researchers directly compared upper and lower body resistance exercises performed to failure at the same relative intensity, the testosterone response was statistically identical. No significant difference between conditions.
That said, free-weight compound movements like barbell squats do tend to produce slightly larger hormonal responses than machine-based lower body exercises like the leg press. This likely comes down to total muscle mass recruited and the stabilization demands of free weights, not an inherent advantage of training legs over chest. A heavy barbell bench press, which recruits the chest, shoulders, and triceps simultaneously, checks many of the same boxes as other large compound lifts.
What Drives the Biggest Response
Not all bench press workouts produce the same hormonal effect. Three variables matter most: intensity, volume, and rest periods.
- Intensity threshold: Research consistently shows that loads around 70% of your one-rep max or higher are needed to trigger a meaningful testosterone elevation. Training at moderate to heavy loads to failure reliably produces a post-exercise spike, while lighter efforts may not.
- Volume: Hypertrophy-style protocols with more total reps and sets tend to produce larger spikes (20-23%) than pure strength protocols with fewer reps (12-14%), even when the weight is heavier in the strength condition. More total work means a bigger hormonal signal.
- Rest periods: This one is interesting. Shorter rest intervals (60 seconds) produce a sharp initial spike that fades quickly. Longer rest intervals (3 minutes) between heavy sets produce a more sustained elevation. A study examining 5 sets of 3 reps at 85% of one-rep max found that both 1-minute and 3-minute rest periods raised testosterone, but the 3-minute protocol kept both total and free testosterone elevated longer into the post-workout window.
If you want to maximize the acute response, the evidence points toward moderate-to-heavy loads, multiple sets, and rest periods long enough to maintain performance across those sets.
Does Training Legs Before Bench Help?
Another common strategy is performing squats or leg presses before bench press, hoping the lower body work floods the bloodstream with testosterone that then supercharges upper body growth. Early studies using single-arm designs (training one arm alone, the other arm after legs) suggested this might work.
However, a more controlled study published in the International Journal of Exercise Science tested this directly. One group did high-volume, moderate-load lower body training before their upper body work. Another group did low-volume, heavy lower body training. Both groups performed identical upper body programs. The result: no difference in testosterone response between groups, and no difference in upper body strength gains over the training period. The hormonal environment created by leg training didn’t transfer into measurably better bench press outcomes.
Does the Spike Actually Build Muscle?
This is the question that matters most, and the answer is probably not in the way you’d expect. The post-exercise testosterone spike from bench press is real, but it’s brief and relatively small in absolute terms. Your levels go from normal to slightly above normal for about 30 minutes, then come back down.
A growing body of evidence suggests these transient hormonal fluctuations contribute far less to muscle growth than the mechanical tension and muscle damage created by the exercise itself. The local signals inside the muscle fibers you just trained, things like protein synthesis activation and satellite cell recruitment, appear to drive hypertrophy more than the brief systemic hormone pulse. This is why training programs that produce larger testosterone spikes don’t consistently produce more muscle growth than programs with smaller spikes, as long as the training stimulus itself is adequate.
That doesn’t mean the spike is meaningless. Testosterone plays a role in recovery, protein synthesis, and long-term adaptation. But chasing the biggest possible post-workout hormone surge is unlikely to be a better strategy than simply training hard, progressively overloading, and recovering well.
Long-Term Effects on Resting Testosterone
The more relevant question for most people is whether months or years of consistent bench pressing and resistance training raise your baseline testosterone, not just the post-workout spike. Some research does support a modest long-term effect. Chronic resistance training has been associated with elevated resting testosterone levels as part of broader endocrine adaptations to regular heavy training.
The size of this effect is much smaller than the acute spike, and it’s entangled with other changes that come from consistent training: reduced body fat, improved insulin sensitivity, better sleep quality, and lower chronic stress. All of these independently support healthier testosterone levels. It’s difficult to separate the direct hormonal effect of lifting from the indirect benefits of being leaner and fitter. What’s clear is that a long-term resistance training habit that includes compound pressing movements creates a hormonal environment more favorable than a sedentary lifestyle, even if the bench press itself isn’t a testosterone therapy.