Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Adjust the seat so your knees are at a 90-degree angle. Sit, placing the ball of one foot on the platform with your heel hanging off. Secure your thigh under the lever. Lower your heel to stretch the calf. Push through your foot to raise your heel as high as possible, contracting your calf. Pause briefly at the top. Slowly lower your heel back to the starting position. Repeat for the desired reps, then switch legs.
Maximize muscle engagement with a full range of motion. Control movements; avoid bouncing. Keep your knee stable. Exhale on the lift, inhale on the lower. Start with lighter weight to master form. Perform slowly to increase time under tension.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.