Will Preston
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Testosterone, Libido and Erections: What It Fixes and What It Does Not
Testosterone drives desire. Erections are mostly blood flow. Adding testosterone to an ED drug helps only below about 288 ng/dL — above that the benefit stops being detectable.
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Low Testosterone: What the Number Means, and How It Is Properly Diagnosed
The diagnosis needs two early-morning blood draws under 300 ng/dL plus symptoms. What treatment improved in the largest trial, what it did not, and the fertility consequence that rarely comes up.
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Breathing, Focus and Performance Anxiety: What Is Actually Known
The anxiety is real and documented. The specific breathing techniques sold as a cure have never been tested in a controlled trial. Both of those things are true at once.
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When Finishing Early Is Worth Seeing a Doctor About
If it is new rather than lifelong, there is a real chance of a findable cause. What the work-up involves, what the prescription options are, and why tramadol sits second-line.
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Pelvic Floor Exercises for Premature Ejaculation: What the Study Actually Did
The famous 82.5% figure came from thirty-six supervised clinic sessions with electrical stimulation and biofeedback, in a study with no control group. What that means for doing them at home.
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Stop-Start and the Squeeze Technique: What the Trials Actually Found
Ten randomised trials, 521 men. Two found large gains, two found nothing at all. What the behavioural techniques are, how they are done, and how much of the evidence holds up.
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Finishing Too Fast: What Counts as Premature, and What Actually Helps
The median man lasts 5.4 minutes, not the number you have in your head. What premature ejaculation actually means clinically, and which treatments have real trial evidence behind them.
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Finasteride and Minoxidil: What the Trials Actually Show
The two hair loss drugs with real evidence behind them — how much hair they actually keep, and what the side-effect numbers say once you read the label rather than the forum.
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How to Improve Sperm Health Naturally: What Has Evidence Behind It
The lifestyle changes with real evidence for sperm health, the ones with weak evidence, and the honest limits of what any of it does for semen volume.
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Do Stress and Poor Sleep Affect How Much You Ejaculate?
Sleep and stress are linked to sperm quality — but the evidence for semen volume specifically points somewhere different. What the studies actually measured.