Bobby Rawat 
No cold plunges do not increase testosterone. The research points the other way. Three peer-reviewed studies that directly measured testosterone before and after cold water immersion all found either a … Read more
The best time of day to sauna and cold plunge depends on what you want out of it. For focus and mood: cold plunge first thing in the morning, 1–3 … Read more
KEY TAKEAWAY: No cold plunges do not lower blood pressure in the short term. They raise it. A 15-minute immersion at around 10°C lifts systolic blood pressure from a resting … Read more
Yes you can have both, and the research backs it. For recovery, alternate 1 minute hot (around 38°C) with 1 minute cold (10–15°C) for 6 minutes total — finishing on … Read more
That first gasp when cold water hits the base of your neck is not a personality test. It is your vagus nerve waking up, your noradrenaline spiking, and your breathing … Read more
KEY TAKEAWAY For muscle recovery and overall wellbeing, the head-to-head research favours cold plunges not cryotherapy. The 2015 Cochrane review concluded there is insufficient evidence that whole-body cryotherapy reduces muscle … Read more
KEY TAKEAWAY The best UV light for a cold plunge is a UV-C unit (254nm wavelength) rated at 18–40W for a typical 80–150 gallon single-person tub, plumbed inline with your … Read more
KEY TAKEAWAY For most people, 2-4 cold plunge sessions per week at 10-15°C is the evidence-backed sweet spot, aiming for roughly 11 minutes of total weekly cold exposure. Søberg et … Read more
KEY TAKEAWAY For most people, cold plunging after a workout is better for reducing soreness, but you should wait at least 4–6 hours after strength training to avoid blunting muscle … Read more
KEY TAKEAWAY: There’s very little direct research on cold plunges during pregnancy. A 2025 scoping review (Shawe et al., Lifestyle Medicine) found only six studies and eight reports worldwide and … Read more
