Sit-ups, trunk twists, and other calisthenics are demonstrated on the video.
Calisthenics is recommended to relax the muscles before a run.
Origin of calisthenics
- From Greek kalli- beautiful (from kallos beauty) sthenos strength segh- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek κάλλος (kallos, “beauty”) + σθένος (sthenos, “strength”).