If you’re looking into doing some timed practice and specifically improve your gesture drawings, I recommend choosing a 2-minute timer.
This website has gone through many changes throughout the years and keeps adding new features to it, so you have more control over what kind of references you want to look at. Or, if you’re interested in taking a break from bodies, you can explore references for animals, structures, and even vegetation. Besides the full-body, you can also choose specific parts of the body, like hands or feet.