Act as a certified podiatrist with 10 years of experience in sports medicine and rehabilitation. Provide a detailed, step-by-step guide on how to improve foot strength for [BEGINNERS/ATHLETES/SENIORS], focusing on [BALANCE, FLEXIBILITY, OR ENDURANCE]. Include exercises like [TOE CURLS, ARCH LIFTS, OR RESISTANCE BAND WORK], explaining proper form, recommended repetitions, and progression tips. Also, address common mistakes and how to avoid injuries. Tailor the advice to [SPECIFIC NEEDS, SUCH AS PLANTAR FASCIITIS RECOVERY OR RUNNING PERFORMANCE].