Here's a study result most foot-training content won't tell you about. Researchers in Japan put 11 well-trained male sprinters through four weeks of toe-flexor strength training, four sessions a week, six exercises per session. Their toe strength went up by 16%. Their sprint times didn't move. Neither did their jumps.
We're telling you anyway. Because the real lesson isn't "toe training doesn't work". It's that you've been training your toes for the wrong reason.
What the toe-strength study actually found
The study, published in the Journal of Trainology in 2023 (Nagahara, Yoshizuka and Inoue), used a crossover design: each sprinter did four weeks of toe training and four weeks without it. Normalised toe-flexor strength rose from 0.331 to 0.384 kg per kg of body weight — a 16% gain in a month. That's a big jump for muscles most athletes never train directly.
But 60 m sprint times, squat jumps, countermovement jumps and rebound jumps didn't change significantly. Neither did the forces they put into the ground while sprinting. At the start, toe strength didn't even correlate with sprint or jump performance in this group.
Read that again with context. These were already fast, well-trained sprinters. Four weeks is short. And sprint time is a narrow, very specific outcome. None of that makes toe strength useless. It just means a stronger big toe isn't a shortcut to a faster 60 metres.
So why train your toes at all?
Because you're not a 60 m sprinter. You're lunging with a sandbag, pushing a sled, landing box jumps, holding a pistol, catching a clean in a deep squat. Your sport is long, loaded, tired and messy. That's where your feet matter most.
Your big toe is your balance point. In a split squat, a lunge or a single-leg landing, the big toe is the last anchor keeping your knee from caving in and your arch from collapsing. Weak toes, wobbly base.
Your toes share the load. When the toes can't press into the ground, the forefoot and arch take more of the stress. Over months of training, that's where plantar irritation and forefoot pain start.
Your toes keep form honest when you're tired. Fatigue is when technique breaks. A foot that can still grip at the end of a workout keeps your knees and hips stacked longer.
And here's the part conventional shoes don't want you to hear: narrow toe boxes and rigid soles stop the toes from working at all. You can't train a muscle that your shoe has put in a cast. Zero drop. Wide toe box. Thin sole. That's where toe training starts.
The 8-minute big-toe routine with The Feet Health Kit
Do this two or three times a week, before training or at home in the evening. Barefoot.
1. Plantar release with the fascia ball (90 seconds per foot)
Stand and roll the cork fascia ball slowly from your heel to the ball of your foot. Pause on tender spots for 10 seconds. You want the sole of your foot to move freely before you ask it to work.
2. Big toe lifts (3 × 10)
Stand tall. Lift only your big toe while the other four stay down. Then switch: press the big toe down and lift the other four. It's harder than it sounds. That's the point — you're rebuilding control your shoes took away.
3. Banded toe flexion (3 × 15 per foot)
Sit with your leg straight. Loop the resistance band around the ball of your foot and toes. Curl the toes down against the band, slowly, then let them return under control. This is direct strength work for the toe flexors — the same muscle group the study trained.
4. Short foot holds (5 × 10 seconds per foot)
Draw the ball of your foot toward your heel without curling your toes. The arch lifts. Hold. This connects your toe strength to your arch.
5. Single-leg balance on the cork roller (30 seconds per side)
Stand on the cork roller or the cork sole inserts on one foot. Keep the big toe pressing down. When it's easy, close your eyes. Now your toes are doing what they're for: keeping you upright on an unstable surface.
Be patient — and train your toes every day
The strength gains in the study came in four weeks. The carry-over into how you lunge, land and push will take longer. That's normal. Feet adapt slowly, and the best foot training is the training that happens every day: walking, standing and training in shoes that let your toes spread and grip.
Think of the routine as the gym session. Think of your footwear as the daily dose. You need both.
Watch. Learn. Move.
Free your toes. Then train them.
The Feet Health Kit gives you everything for this routine in one cork case: fascia ball, massage roller, resistance band and sole inserts. Fix your feet.
Then give your toes room to work every day in our zero-drop barefoot sneakers →