Most runners focus on quads, hamstrings, and calves – but the real power (and injury protection) lives in the small, often-ignored muscles inside your feet. At Save Our Soles, we call them the “Forgotten Five”: abductor hallucis, flexor hallucis brevis, adductor hallucis, flexor digitorum brevis, and abductor digiti minimi. These intrinsic foot muscles act like a natural suspension system, absorbing shock, stabilising arches, and preventing overuse injuries.
Why These Muscles Matter More Than You Think
Weak intrinsics force bigger muscles to overcompensate, leading to shin splints, plantar fasciitis, Achilles issues, and even knee pain. Stronger foot muscles improve balance, enhance push-off power, and help maintain proper form when fatigue sets in late in a run.
Signs Your Forgotten Five Are Weak:
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Feet flatten excessively during long runs
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Toes “claw” or don't spread naturally when you walk barefoot
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Frequent cramping in the arch or toes
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Slow recovery from impact-heavy sessions
Simple Ways to Wake Them Up
You don't need fancy equipment. Do these 3–5 minutes a day:
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Toe Yoga – Sit and spread all toes wide, then lift just the big toe while keeping the others down (and reverse). 10 reps per foot.
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Short-Foot Exercise – Stand, shorten the foot by drawing the ball toward the heel without curling toes. Hold 5 seconds, 10 reps.
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Marble Pickup – Sit and use toes to pick up 10–15 marbles or small objects and drop them into a cup.
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Towel Scrunch – Place a towel flat, scrunch it toward you using only your toes. 3 sets.
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Barefoot Balance – Stand on one leg for 30–60 seconds per side, eyes open then closed for extra challenge.
When to Add Them to Your Routine
Do them daily during warm-up or while brushing teeth. Most runners notice better arch support and less post-run soreness within 2–4 weeks. For extra stubborn cases, custom insoles can support while the muscles strengthen.
Train the Forgotten Five and your feet become more resilient, efficient shock absorbers.
Your knees, hips, and back will quietly thank you mile after mile.
Visit www.saveoursoles.com for more foot-strengthening tips.