Since I didn't know how my sports plans would go at that time, a set of elastics was one of the first things I bought myself to train at home. This because the investment was small but the possibilities were endless. By attaching the elastics to something, suddenly many more options arise than just the legs and arms and so I was able to train the stomach, legs and chest muscles extra before I had more suitable equipment.
I started with a set of normal rubber bands, but with my leg hair this was an uncomfortable experience to use, so now I usually use these cotton bands.
Now years later I still use elastics in almost every training in different exercises. It remains a good way to vary and to load the muscles in a different way than with weights for example.
