I'm 55 and a regular swimmer so think I have reasonable aerobic fitness but do no other exercise. I hate running and haven't done it since I was at school. I decided to try couch to 5k as all the pools are closed due to lockdown and coronavirus.
The very first run week one went really well and I was surprised how easy I found it. But halfway through the second run what I thought was cramp turns out to be a calf strain.
A week later and it's still too tender to try running again. Advice Please?