Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Secure TRX straps to an anchor point. Adjust straps to mid-calf length. Kneel, hands under shoulders, knees under hips. Place one foot in a strap loop, knee bent. Engage core, extend opposite arm forward and leg backward, forming a straight line. Hold briefly. Return with control. Repeat on both sides.
Maintain a neutral spine. Perform slow, controlled movements. Keep hips level, avoid rotation. Engage your core. Ensure supporting knee is under your hip. Breathe steadily.
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