Jass

About Jass

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So far Jass has created 1 blog entries.

Box jumps – why and how

2019-01-28T21:45:14+02:00

Relatively daily in the athletics hall and sometimes on Facebook and Instagram we can see younger or older people and athletes who do box jumps in different styles and on different [...]

Box jumps – why and how2019-01-28T21:45:14+02:00