Not strictly running related (I think) but experienced a couple of instances of calf cramp this week.
The first, in my left calf, was while I was laying in bed on Sunday morning. The second, in my right calf, happened this morning whilst swimming. I was just propelling away from the pool end for my 81st length (was planning on finishing on 82 anyway) when it kicked in.
Are these cramps likely to be caused by dehydration, lack of electrolytes, or insufficient recovery time after the last lot of exercise?
On both occasions, there was rapid recovery with no further issues.