Foot Health: Why Your Expensive Trainers Might Be Ruining Your Squat
When we talk about the "Chassis" at CrossFit Chiltern, we usually focus on the hips, the spine, and the shoulders. But we often overlook the only part of your body that actually makes contact with the ground: Your Feet.
If you are trying to squat, deadlift, or lunge in highly cushioned "running" trainers, you are trying to build a house on a bed of marshmallows. Those expensive, air-filled soles might feel comfortable on the high street, but in the box, they are a disaster for your performance and joint safety.
The Cushioning Effect
Modern footwear has made our feet "soft" and "lazy." Most commercial trainers are designed with a narrow toe-box and excessive arch support. This causes the muscles of your feet to atrophy. If a shoe is doing all the work of supporting your arch, your foot doesn't have to.
Cushioned shoes also have a compressible heel-to-toe drop. When you put load on your back, the foam under your heel compresses unevenly. This shifts your centre of mass forward and makes it impossible to "drive through the mid-foot."
The Lifter Distinction: Tools vs. Cushions
The difference between weightlifting shoes and running trainers lies in compressibility. The heel of a running shoe is made of soft foam. The heel of a lifting shoe is made of solid plastic or wood. It does not budge.
We use lifting shoes for two reasons:
- Ankle Geometry: The elevated heel allows for a deeper squat with an upright torso.
- Force Transfer: 100% of the power you generate goes directly into the floor. No energy is leaked into squishy foam.
Lifters are a tool for the engine, but not your "go-to" for every day. We stay in flat shoes or bare feet for skill work to ensure the feet stay strong.