Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Step forward with one leg, lowering hips until both knees are bent at 90 degrees. Keep your torso upright as your trailing knee approaches the floor. Drive through your front heel to return to standing and step through to the next lunge, alternating legs as you move forward.
Maintain an upright chest throughout the lunge to prevent leaning forward and protect your lower back, engaging your upper back muscles to support your posture. Imagine stepping along a set of tracks to ensure each step is controlled and consistent, minimizing lateral movement and maximizing forward progress. As you rise, powerfully drive through the front heel to fully extend your leg and engage your glutes, ensuring a strong and stable push-off. Actively tighten your core muscles throughout the exercise to stabilize your spine, improve balance, and transfer power efficiently from your lower body to your upper body.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.