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The isometric superman holds the superman position for a given duration.
Lie face down, arms extended in front of you, legs straight.
Lift your arms, chest, and legs a few centimeters and hold the position while breathing normally.
Keep your neck in line with your spine. A small height held cleanly is enough.
Image and text: Bryl Lim / Everkinetic — recoloré et rastérisé — CC BY-SA 4.0, via Workout Guide. Original entry