Cold Plunge Safety: Risks, Precautions & Who Should Avoid

Cold plunge is generally safe for healthy adults, but there are important safety considerations. Who Should Avoid Cold Plunge Absolute Contraindications Uncontrolled hypertension — Cold shock can spike blood pressure Heart arrhythmias — Cold can trigger dangerous rhythms Recent heart attack — Wait at least 6 months Unstable angina — Cold stress can trigger chest pain Severe Raynaud’s disease — Extreme cold can cause tissue damage Relative Contraindications (Consult Doctor First) Controlled hypertension — May be OK with monitoring Heart disease — Some patients can safely cold plunge with clearance Diabetes — May affect blood sugar, need monitoring Pregnancy — Cold shock can be risky Epilepsy — Drowning risk during seizure Safety Tips 1. Start Gradually Begin with cool showers (60-65°F) Gradually decrease temperature over weeks Start with 1-2 minutes, increase gradually Don’t jump into extreme cold immediately 2. Never Plunge Alone Have someone nearby when cold plunging Use a buddy system for outdoor cold exposure Keep a phone nearby for emergencies Let someone know when you’re cold plunging 3. Control Your Breathing Slow, controlled breathing prevents cold shock Don’t hyperventilate If you feel panic, exit immediately Practice breathing techniques before entering 4. Know the Signs of Hypothermia Early signs: ...

April 30, 2026 · 2 min · 366 words · BioHacking Recovery Team

Red Light Therapy Safety: Risks, Side Effects & Precautions

Red light therapy has an excellent safety profile, but there are some precautions to be aware of. Is Red Light Therapy Safe? Yes, for the vast majority of people. RLT: Doesn’t use UV light Doesn’t cause burns Doesn’t damage DNA Has thousands of studies supporting safety Potential Side Effects Rare and Mild Eye strain — From looking at bright LEDs Skin sensitivity — Some people have light sensitivity Headache — Rare, usually from eye strain Insomnia — If used too late in the day Very Rare Photosensitivity reaction — In people taking photosensitizing medications Hyperpigmentation — In rare cases with excessive use Who Should Be Cautious Consult Doctor First Pregnant — Insufficient safety data Photosensitizing medications — May increase sensitivity Active cancer — Theoretical concern about stimulating cell growth Epilepsy — Flashing lights may trigger seizures (steady light is usually fine) Generally Safe But Be Aware Fair skin — May be more sensitive to light Eye conditions — Use protective goggles Children — Use lower doses, shorter sessions Safety Tips 1. Don’t Stare at LEDs Close eyes during face treatments Use protective goggles if included Position device to avoid direct eye exposure 2. Follow Recommended Protocols Don’t exceed recommended session times Maintain proper distance Don’t use more than once daily per area 3. Start Gradually Begin with 5-minute sessions Increase to 10-20 minutes over weeks Monitor your skin’s response 4. Check Your Medications Some medications increase light sensitivity: ...

April 30, 2026 · 2 min · 291 words · BioHacking Recovery Team