1. Hang the two spring lines on the holder
2. Add weights of various weights
3. Try a double spring and a single spring
4. I'll compare it with the same weight
5.2 Try double and triple springs
6, Compare it with the same weight
| comfort | ⦾ Comfortable |
| age rating | 0+ Everyone |
| storage | 0.2 GB |
| website | training.contentsda.kr |
| developer | ContentsDaInc |
| publisher | ContentsDa Inc |
| connection | Internet not required |
| app version | 0.0.1 |
| languages |
English
|