Control your fan speed with your heartbeat.
I created this while setting up a home trainer for bike training in my garage during the lockdown in 2020. One issue with home trainers, unlike biking outdoors, is that you don't get the benefit of the wind generated by your speed that cools you down. So you sweat a lot, and this creates dehydration. Not cool (pun intended).
The solution is to use a fan. But when you are lazy (and focused on your workout) you don't want to have to get up and adjust fan speed (and I don't have a remote for my fan, and it's much cooler to have it automated instead).
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