What does the chapter state about "Kapalabhati is a kriya" in Pranayama And Kriyas?
Kriyas Kapalabhati Kapalabhati is a kriya (cleansing procedure).
Maintain the position for 10-15 seconds or as long as comfortable.
This is one round of sheetali pranayama.
But at the same time, he does not want to be seen as a spoilsport by his friends.