When they reached the field, work began immediately—they peeled off their shirts for calisthenics. This was the only part of the day that Anthony enjoyed.
Say you're in the room where you're, like, practicing thumb calisthenics — which probably isn't a thing — but the room is a little chilly, so the blood feeding your dermis loses a lot of heat to that cold air.
The song was distributed or given – sent – to schools across the United States, and many students of the 1960's and 1970's listened to this song as they did their daily calisthenics.