None for "tolerance" to the disease.
But google "bodyweight exercises" if you want. Get a mat. Rotate through them with no rest whatsoever between.
ie, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, 50 paratroopers, 50 burpees, 50 pushups, 50 situps, so on until you cannot complete one rep of any. Exhaust yourself. Be drenched in sweat.
We did plenty of others in end-of-practice conditioning way back in wrestling, but I've forgotten the names of many. Hell, if you aren't in a literal 'stay at home or we fine you' state, just go outside and run for an hour or two.
:shrug:
If you have money lying around, get a rowing machine. Ignore the speed settings. Set it to max resistance, and set it to track average watts-per-pull. Hold the average at 200 watts/pull for 20 minutes. You'll be dizzy by the time you are done and there will be line-shaped puddles of sweat on either side of the machine. If you can't do that, just go all-out for 20 minutes. And don't be kind to yourself. Maximum discomfort is the goal.