Reported
What practitioners describe.
Cold recruits brown adipose tissue; the Leiden obesity study explored the method in that context.
Honestly graded
What the evidence says.
Leiden obesity study; brown fat literature; early.
Protocol
How to practice for this.
Breath
Three to four rounds each morning, seated, on an empty stomach.
Cold
End the shower cold; progress by degrees.
Commitment
Thirty days. Track it. Notice.
Safety, plainlyNever practice breathing exercises in or near water.
Personal experience, not medical claimsReported benefits are personal experiences; consult a physician for any medical condition. Read the safety doctrine.