Sounds like a foot positioning issue - incorrect arch support and/or cleat positioning
Have a look at Andy Pruitt's Complete Medical Guide for Cyclists or spend some money at Cycle Fit
@Aroogah started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Sounds like a foot positioning issue - incorrect arch support and/or cleat positioning
Have a look at Andy Pruitt's Complete Medical Guide for Cyclists or spend some money at Cycle Fit