| Δ0 | rebounding on a small home trampoline itself | mini trampoline rebounding, home rebounder workouts |
| Δ1 | other bouncing-based exercise equipment | full-size backyard trampoline, jump sticks, bungee bounce boots, moon shoes, pogo stick |
| Δ2 | other low-impact home cardio machines | stationary bike, elliptical trainer, rowing machine, step platform, stair-stepper |
| Δ3 | other general home workout activities | jumping rope, yoga, bodyweight squats, resistance-band training, home aerobics video |
| Δ4 | general fitness and sports activities outside the home | running, swimming laps, outdoor cycling, weightlifting at a gym, playing tennis |
| Δ5 | everyday wellness activities unrelated to exercise | reading a book, meditating, gardening, drinking water, sleeping eight hours |