What purpose would you have in throwing one? Throwing your own energy around or worse at other people and objects without a purpose to it isn't wise. Not that it would be noticed, but it could influence negatively or simply chaotically. For instance if someone was upset and you yourself felt down at the time, your personal energy directed at them could cause even more inbalance in their emotional state. Anything thrown should be well formed, well thought out specific energy and should be sent with a solid intention/goal. If you want to be a carebear and throw love and happiness around, go for it, but don't just throw raw personal energy.