If its truly a cramp, then the issue is probably not related to the way you're standing on the board.
Cramps are often caused by; dehydration, performing a foreign activity, muscle fatigue, poor conditioning, etc.by:
- dehydration
- performing a foreign activity
- muscle fatigue
- poor conditioning
- etc
Your best bet is to increase your water intake, and continue boarding. If after a few weeks the cramps persist, then you may need to see a doctor as it could be something more serious.
