Maybe you could volunteer to help disabled and elderly people do physical tasks that they can't do themselves.
Another activity that gets a lot of eggsercise is moving like moving from one home to another.
I mention these tasks because they have more practical purpose than other eggsercise, and often, the problem with no eggsercising is motivation, which is easier to get if someone is counting on you to do something for them.
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Drain and plane and grain and blain your brain, and then again,
Propane and butane out of the gas main, your blain shall sustain!