If you're fighting to get on the bike, try swimming or running and see if either is more appealing.
You could commit to 15 min of a sport each day for a couple of weeks and build from there.
You could volunteer at a race.
You could find a group to train with and see if the social part helps.

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD