Physical Effects
Boosts immune system by increasing white blood cells
Speeds up metabolism by activating the sympathetic nervous system which increases heart rate. Homeostasis burns calories by bringing the core body temp back up.
Reduces pain by causing blood vessels to constrict which reduces swelling and inflammation
Improves recovery by reducing fatigue post exercise
Stresses the body in a positive way
Mental Effects
Increases mood by releasing neurotransmitters norepinephrine and endorphins (runners high)
Improves will power to do difficult things
Rules Of My Challenge
13 Weeks
Jump in the ocean at least once per week
A week runs from Mon morning to Sun evening
Can be any time of the day
Full head must go under water
Can be in the water for as long or as little as you like
Methods To Try Cold Exposure
Ocean swim challenge like I did.
Shower hot and then cold at the end. Gradually build up to 2-3 minutes.
Straight up cold shower
Bath tub filled with water and bags of ice
Studies
The Effect of Cold Showering on Health and Work: A Randomized Controlled Trial
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025014/
Effects of Cold Water Immersion and Contrast Water Therapy for Recovery From Team Sport: A Systematic Review and Meta-analysis
https://journals.lww.com/nsca-jscr/Fulltext/2017/05000/Effects_of_Cold_Water_Immersion_and_Contrast_Water.32.aspx
Adapted cold shower as a potential treatment for depression
https://www.sciencedirect.com/science/article/abs/pii/S030698770700566X
