Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lie on your back, arms extended for stability. Place heels on a Swiss ball, legs straight. Engage core and glutes to lift hips, forming a straight line. Bend knees, rolling the ball towards your glutes, contracting hamstrings. Pause, hips elevated. Slowly extend legs, returning to the start.
Maintain core engagement and a straight line from shoulders to knees. Use controlled movements. Ensure proper Swiss ball inflation. Start with a smaller range of motion if needed.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.