Of course just when I have gotten addicted to yoga and sign up for an Unlimited Monthly, my right calf starts to feel heavy and overstrained. I haven't been to class for the last 4 days

. I've been doing RICE (Rest, Ice, Compression and Elevation) for a couple of days, and I plan on taking things slow. Is there any modified yoga moves I can do while I give my leg a break. And when I get back to yoga are there any stretches I should do before class begins.
Thanks a lot.