The Biohacker's Sauna Essential

Your Sauna Is Destroying Your Sperm.

TestGuard cooling shorts protect your biology without quitting your sauna habit. 3-layer thermal barrier. 30-day money-back guarantee.

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Join the waitlist — free gift included with every first order • ★★★★★ 4.8/5 from test run

The Hidden Cost of your sauna habit

The Science Is Clear — Heat Kills Sperm

Your scrotum exists outside your body for one reason: sperm needs to be 2-4°C cooler than core body temperature. A single sauna session overwhelms this cooling system for hours. The research is unambiguous.

>50% Drop in sperm concentration after 2x weekly sessions Garolla et al., 2013
-54% Drop in motility — sperm that can actually reach an egg Bryan Johnson, 2024
1 session A 20-minute sauna is enough to suppress sperm count. Procope, 1983

How TestGuard Works

£39.00

Purpose-built to protect testicular temperature during sauna use. Athletic shorts with integrated BPA-free gel cooling insert.

✓ 100% cotton body — no contact with microplastics
✓ Hidden inner cooling pouch (with BPA-free gel packs)
✓ Moisture-wicking and breathable — no heavy feeling post-sauna
✓ Looks like normal shorts — invisible protection

What's in the box:

✓ 1x TestGuard Cooling Shorts
✓ 2x BPA-free gel cooling packs
✓ 1x Free Gift with every first order

Get My Protection

Why Men Choose TestGuard

Purpose-built for men who refuse to choose between their protocol and their biology.

01

Keep Your Protocol

TestGuard lets you keep every session without compromising your fertility. No messy ice bags and no quitting.

02

Invisible at the Gym Sauna

Looks and feels like normal athletic shorts. Your training partners won't know. Your fertility markers will thank you.

03

Engineered for the Heat

3-layer Dual-Phase Thermal Barrier. Purpose-built for 80°C+ heat.

04

£49 vs £15,000

One IVF cycle costs £5,000–15,000. A private sperm test is £150–300. TestGuard is £49.

Stop Gambling With Your Fertility

Every unprotected sauna session suppresses sperm production by 50%+. TestGuard lets you keep your protocol AND protect what matters.

Try TestGuard

Join the waitlist for a free gift included with every first order.

✓ Free UK delivery ✓ 30-day money back guarantee

Common Questions

Do I really need these if I sauna regularly? +

If you sauna more than once a week, the research says yes. A single session can suppress sperm production by over 50%.

Will people notice I'm wearing them? +

No. TestGuard looks like normal athletic shorts with invisible inner protection.

How long do the gel packs stay cold? +

Approximately 30 minutes in a standard 80°C sauna. After that, the 3-layer construction provides passive insulation.

Can I use these if I'm not trying for a baby? +

Yes. Sperm quality affects testosterone, energy, and overall vitality — not just fertility.

What sizes do you offer? +

S through L, sized for UK/EU standards. 30-day free returns and exchanges.

What's your return policy? +

30-day no-questions-asked returns. Free exchanges for sizing.