A box jump being performed in a gym environment. 
This is a cropped version of an original photo (CC0 license) taken by Li Sun and viewable at: <a rel="nofollow" class="external free" href="https://www.pexels.com/photo/photo-of-woman-jumping-on-box-2294403/">https://www.pexels.com/photo/photo-of-woman-jumping-on-box-2294403/</a>
<a href="//commons.wikimedia.org/wiki/User:RickyBennison" title="User:RickyBennison">RickyBennison</a>
<span class="int-own-work" lang="en">Own work</span>