Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted, clever little truths, hidden in daily life.

Here are some examples to inspire your own showerthoughts: 1

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You could probably get electrical energy that is needed to run a gym (lights, accountant pc, vending machine) if you just install generators in all of this gym's exercise equipment (self.showerthoughts)

submitted 13 hours ago by ultrahamster64 to c/showerthoughts

43 comments fedilink hide all child comments

You also need a big enough battery to get through slow hours.

So you can get the Zero-emissions Off-the-grid gym!

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[–] [email protected] 7 points 7 hours ago (3 children)

It's a tough ask. A bicycle generator will be 70% efficient, and a healthy amateur could do 100w over an hour of effort generating 70w. A treadmill would have a lot more friction, and a rowing machine gets nowhere near the power you can generate from your legs. A linear "foot press" exercise machine is not as efficient as the circular motion of cycling.

Power requirements of a gym might also include music systems, outside lighting. Heat/hot water could come from gas.

It can still be worth adding generators and wiring to exercise machines to offset energy consumption, including batteries to prevent peak TOU rates. But it is a tough ask to disconnect from grid, without solar.

[–] UnderpantsWeevil 1 points 15 minutes ago

It can still be worth adding generators and wiring to exercise machines to offset energy consumption

It seems like a lot of extra overhead for marginal benefit.

[–] Chocrates 3 points 1 hour ago* (last edited 1 hour ago) (1 children)

There is a YouTube video around of a sprint cyclist powering a toaster and he can barely do it. I don't think you could do it "reasonabley".

https://youtu.be/S4O5voOCqAQ?si=vXfcfWFe4SQOLgVq

[–] [email protected] 1 points 25 minutes ago

600w electrical output requiring 700w cycling power output is not sustainable human power output. TdF riders will usually output 1kwh over their full (4hr ride) day. Enough for 100 toasts

[–] [email protected] 4 points 4 hours ago (1 children)

yeah. it still amazes me how much it takes to actually burn calories and its mostly heart rate that does it. I was thinking how you won't get anything from the free weights or aerobics classes along with swimming and heating pools, sauna, hot tub is not insignificant. I think it could be done as long as what the gym offers is limited and it uses very energy efficient things.

[–] Noodle07 1 points 3 hours ago

Eh if you want to go real efficient you just drop the heating music and light and have only non electric machines and voilà! 0W used :D