Boxing and Jiu Jitsu are all greatly calming
both are very stress relieving, very calming... It levels you out as a person. Especially in the beginning, where you are usually getting your bottom kicked, quite a bit.. It is enjoyable because you improve, there is reward with hard work, and it is humbling because you are working very hard, man to man, or woman, and dominating or being dominated. After a good session in the ring or on the mat, you leave with calmer spirits.. Because you've expended a lot of pent up emotions or as I would like to call them, our primal urges.