sometimes when I sleep with my legs curled up all night and then stretch suddenly when I wake up my calves seize up really painfully. The last few times it happened it was hard to walk for a few hours but went away throughout the day. Try to be more mindful about suddenly stretching when I wake up now.
voxpoplar wrote
Reply to happy birthday sonic!!! by hollyhoppet
https://youtu.be/RNOthxdlcMc?t=7m23s