“Nothing has given me mental confidence than being able to go direct from room temperature into the cold,” Dorsey says.” [E]specially in the morning, moving in an ice-cold tub from only being warm in bed is it just unlocks this thing in my head and I feel like if I can will myself to do this thing that appears so small but hurts so much, I could do anything.”

From CNBC:

Picture: By cellanr – https://www.flickr.com/photos/rorycellan/21834269682/, CC BY-SA 2.0, Link

Twitter and Square CEO Jack Dorsey (42) walks 5 miles to work every day, eats just one meal each day, fasts all weekend, and attempts to meditate two hours every day. CNBC appeared at 11 of his”wellness” habits, which he discussed on a recent episode of the Ben Greenfield Fitness podcast.