Calf / Achilles / Tibia

Standing Calf Raise

Bilateral calf raise with straight knees. Targets the gastrocnemius — the larger, outer calf muscle that produces push-off power during running. Straight knee = gastroc; bent knee = soleus. Both matter, but gastroc drives the push-off phase of every stride.

Equipment: bodyweight, kettlebells, full_gym | Reps: 12-15 (bodyweight) · 10-12 (kettlebells) · 10-12 (full_gym) | Rest: 45s

Regions: Primary: calves

Coaching Cues

• Stand on the edge of a step with heels hanging off
• Rise up onto your toes as high as you can
• Squeeze and pause briefly at the top
• Lower your heels below the step level for a full stretch
• Keep your knees straight throughout — slight softness only

Common Mistakes

• Not using full range — both the stretch at bottom and squeeze at top matter
• Bouncing through reps — slow and controlled, especially the lowering
• Bending the knees — turns it into a soleus exercise

Single-Leg Calf Raise

Unilateral calf raise. Running is a single-leg activity — each calf handles your full bodyweight plus impact forces on every stride. This matches that demand exactly.

Equipment: bodyweight, kettlebells, full_gym | Reps: 10-12 | Rest: 45s

Regions: Primary: calves

Coaching Cues

• Stand on one leg on the edge of a step
• Rise up onto your toes as high as you can
• Squeeze at the top, pause briefly
• Lower with control below step level for full stretch
• Use a wall or rail for balance if needed — balance isn't the goal here

Common Mistakes

• Not using full range of motion — go all the way up and all the way down
• Using momentum or bouncing to get through reps
• Rushing reps — slow eccentrics (lowering) build tendon capacity
• Cheating by pushing off with the other foot

Bent-Knee Calf Raise

Calf raise with knees bent at about 30 degrees. Targets the soleus — the deeper calf muscle underneath the gastrocnemius. The soleus is THE marathon muscle: slow-twitch, fatigue-resistant, and responsible for calf endurance through 26.2 miles. Bending the knee takes the gastroc out of the equation so the soleus does the work.

Equipment: bodyweight, kettlebells, full_gym | Reps: 12-15 (bodyweight) · 10-12 (kettlebells) · 10-12 (full_gym) | Rest: 45s

Regions: Primary: calves

Coaching Cues

• Stand with knees bent about 30 degrees — and keep them bent the whole time
• Rise up onto your toes
• You'll feel this deeper in the calf than the straight-knee version
• Lower with control
• Maintain the knee bend throughout — don't straighten up

Common Mistakes

• Straightening the knees during the rep — defeats the purpose
• Not enough range of motion — full rise and full lower
• Going too fast — slow tempo drives tendon adaptation
• Letting knees drift inward

Seated Calf Raise

Machine-based bent-knee calf raise. The gold standard for soleus isolation — the deeper calf muscle responsible for calf endurance through 26.2 miles. The bent-knee position takes the gastrocnemius out so the soleus does all the work. Machine provides stable, progressive loading that bodyweight bent-knee raises can't match.

Equipment: full_gym | Reps: 10-15 | Rest: 45s

Regions: Primary: calves

Coaching Cues

• Sit with pad on lower thighs, balls of feet on the platform edge
• Lower heels below the platform for a full stretch at the bottom
• Press up through the balls of your feet as high as you can
• Squeeze at the top, pause briefly
• Lower with control — slow eccentric drives tendon adaptation

Common Mistakes

• Bouncing at the bottom — defeats the tendon-loading benefit
• Not using full range — both the stretch at bottom and squeeze at top matter
• Going too heavy too soon — control and range of motion first
• Rushing reps — slow tempo is the stimulus for tendon adaptation

Tibialis Raise

Strengthens the front of the lower leg (tibialis anterior). The primary defense against shin splints. Also builds the dorsiflexion strength needed for toe clearance during the swing phase of running — preventing the toe-catch trips that happen when fatigued.

Equipment: bodyweight | Reps: 12-15 | Rest: 45s

Regions: Primary: calves

Coaching Cues

• Lean your back against a wall
• Place your feet about 12 inches out from the wall
• Lift your toes toward your shins as high as you can
• Lower with control — don't just drop them
• You should feel the front of your shins working

Common Mistakes

• Moving too fast — control the lowering
• Not lifting through full range — toes should come up as high as possible
• Feet too close to the wall — makes it too easy
• Rocking the body instead of isolating the ankle

Heel Walks

Walking on heels with toes raised off the ground. Functional tibialis strengthening that mimics the dorsiflexion demand of running's swing phase. Especially important for newer runners building shin resilience.

Equipment: bodyweight | Reps: 30-40 | Rest: 30s

Regions: Primary: calves

Coaching Cues

• Walk on your heels only — toes stay pulled up the entire time
• Take short, controlled steps
• Stand tall with good posture
• You should feel the front of your shins burning

Common Mistakes

• Letting toes drop and touch the ground
• Steps too long — short and controlled
• Rushing — steady pace, maintain toe height

Toe Walks

Walking on toes with heels raised off the ground. Builds calf endurance and ankle stability under movement — the sustained calf demand your calves face during every running stride.

Equipment: bodyweight | Reps: 30-40 | Rest: 30s

Regions: Primary: calves

Coaching Cues

• Rise up onto your toes as high as you can
• Walk while maintaining that height — don't sink between steps
• Take short, controlled steps
• Stay tall, eyes forward

Common Mistakes

• Heels dropping between steps — maintain height throughout
• Losing balance and staggering
• Steps too long — keep them short