Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lie face down, legs extended, feet on the floor. Hands under shoulders, elbows close to the body. Inhale, press into palms to lift chest and straighten arms, shoulders relaxed. Engage thighs, lift knees off the floor, balancing on your toes. Hold, gaze forward. Exhale, slowly lower back down.
Align hands directly under shoulders. Slightly bend elbows if lower back strains. Engage your core to protect your lower back. Lift through the chest, not just with your arms. Widen fingers if wrists are uncomfortable. Breathe steadily.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.