You can use a lacrosse ball when watching TV, sitting at your desk, or even while lying in bed. The best method is to play around until you find a desired trigger point and slowly relax and let your body weight do the same. If the surface is to hard, and the pressure is giving you pain, try it on a softer surface.
The ball is no bigger than a tennis ball, and adds very little weight to any gym or personal bag. It’s a perfect massaging tool for anyone traveling, or anyone who spends a lot of time on the road.
These balls can be used on most parts of your body and are very effective in releasing muscle tension.
Please note - these are not a completely hard ball, they do have a certain amount of "give".