according to this website, I'd need at least 12 balloons to take 100 pounds off my weight so I could do superhuman jumps, and/or do some lower-risk wingsuit experiments. all probably totally illegal.
>>> import math >>> (4/3) * math.pi * (3.5 ** 3) 134.6957850226624 >>> _ * 28.2 3798.4211376390795 >>> _ / 448 8.478618610801517 >>> 100.0 / _ 11.794374129837951
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