pure water at mean atmosphere pressure at sea level if we’re getting technical, but frankly human body temperature varies from 35.5C (95.9F) to 37.5C (99.5F) anyway, and that’s before considering when people are ill, so if we go down that route it falls apart quickly enough that the definition of 100 given above is clearly just as arbitrary
These are all in cargo pants but default is phone front left; small wallet (leather card holder with a zip pocket with a tile in it) front right; keys back zip pocket, but recently I was in another country and did water bottle front top left; phone, large wallet due to cash & book front top left; travelcard and hotel key back zip pocket, passport & 120Ah portable charger front bottom right, coins front bottom right which surprisingly felt just fine so maybe I’m ready to become a suburban dad