Answer: chinning

AnswerCrossword Clue
CHINNINGGym exercise.
CHINNINGGymnast's activity
CHINNINGEnjoying a gabfest
chinningDraw one's body up so as to bring one's chin level with or above (a horizontal bar) with one's feet off the ground, as an exercise
chinningCHIN, to hold with the lower part of the face