Cold and cellular clean-up: why age changes the answer
A widely shared study said cold plunges improve the cells' recycling system. It was in young men. The same lab's earlier work shows older men respond differently.
The Research
Read the studies, not the hype.
Every piece here starts with a paper, names it, and says what it does and does not show. Written for people over forty who want the evidence before the equipment.
Your first four plunges
The gasp, the racing breath and the pounding heart are the cold shock response. It fades with practice. How to get through the first sessions well.
The 11-minute rule, re-read
The internet's favourite cold and heat dose came from a description of what one group of swimmers did. What the study actually showed.
Keep the muscle: when not to plunge
Muscle is a longevity asset after 50. Cold straight after lifting may take a little of the gain. How to time it.
Adelaide researchers pooled the cold plunge evidence. Here is what held up.
A University of South Australia review brought together 11 studies on cold water immersion. What worked, what did not, and what we still do not know.
What your heart does in 7 °C water
New ECG data from middle-aged cold water swimmers in Geneva. A calm read for anyone over 45 considering an ice bath.
A longevity week for over-50s: heat, cold, light and movement
The capstone of our 30-day series. One practical week built only from the research we have covered.