I have pretty painful tendonitis in my achilles tendons on both heels.
It can catch me off guard if I stand after sitting for awhile or sometimes when I wake in the morning. Getting moving can be rough.
I asked the doctor about it and she advised that I stretch my legs—specifically, those tendons on each heel—regularly. And I do try.
But I find that I’ll go a few days without stretching, and then the pain is almost unbearable when I get up and start walking.