I'm warming up, and Frankenstein (my cat) is very interested because she hasn't seen me do this indoors for a while. Warmups are important, and with as many injuries I've had, I take this seriously. Even on an indoor bike or stationary bike, I know I can get injured because I had an Achilles tendon injury. I've had three somewhat serious Achilles injuries. One was a complete rupture that didn't even happen during exercise. These are bad not just because of the pain and inconvenience but because they keep me away from exercise for long periods of time.

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Photo by Alexander Schimmeck https://unsplash.com/@alschim?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash