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All the latest articles from our medical experts on testosterone, men's health, and longevity.

At what age does a man stop ejaculating? Understanding the changes in your body

At what age does a man stop ejaculating? Understanding the changes in your body

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Jan 19, 2026 · 12 min read

There is no specific age when a man stops ejaculating, and many men can ejaculate throughout life, though semen volume and the “force” of ejaculation often decline with age.[1] If ejaculation changes suddenly or stops completely, it is worth getting checked because the cause is often identifiable and treatable. “Most men don’t hit a birthday ...

Athlete biomarker testing for longevity: The lab numbers that keep men performing longer

Athlete biomarker testing for longevity: The lab numbers that keep men performing longer

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 19, 2026 · 12 min read

For longevity-focused men who train, repeating key labs, especially HbA1c (a three month average of blood sugar) and ApoB (the number of atherogenic particles that can enter artery walls), can reveal early metabolic drift and cardiovascular risk before performance drops or disease shows up. Pair those with iron, inflammation, and hormone and recovery markers to ...

What muscles does cycling work? A physiologist’s guide to building power

What muscles does cycling work? A physiologist’s guide to building power

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Jan 18, 2026 · 12 min read

Cycling primarily works the quadriceps, gluteus maximus, hamstrings, and calves, while the core and hip and lower back stabilizers brace the pelvis to transfer force through a cyclical pedal stroke where the foot stays in contact with the pedal. If you only push down on the pedals, you can leave meaningful power untapped and increase ...

Weights or cardio first? How to sequence your workouts for muscle, endurance, and fat loss

Weights or cardio first? How to sequence your workouts for muscle, endurance, and fat loss

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Jan 17, 2026 · 12 min read

For most men training for strength, muscle, fat loss, or general fitness, do weights before cardio, and do cardio first only when endurance is your top goal. The reason is simple: whichever workout you do first usually gets your best energy, your best form, and your best results. “If you can only train once, put ...

How long does it take to lose muscle? A practical timeline for men who lift

How long does it take to lose muscle? A practical timeline for men who lift

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Jan 17, 2026 · 12 min read

Measurable muscle loss can begin within about 2 weeks of stopping strength training, with more obvious drops in muscle size and strength by weeks 3 to 4. The good news is that most men can slow or prevent this with a small, high effort “maintenance dose” of lifting plus adequate protein. “Most guys assume a ...

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