Hi all, I am looking to study MA's again after 4 months and I'm finding it very difficult, I'm looking for a MA which combines speed and cardio (because I want to be toned and fit), I loved doing boxing because I felt a lot of energy and I got in very good shape, but I also want to find an art very good for self defense. So long I've looked at Ninjutsu, Kali and Krav Maga, but I dont know if they will get me in shape too, and Ninjutsu uses a lot of weapons as well as kali but I don't know if that is usefull for self defense due to the fact that ppl dont walk around with swords or sticks so I really don't know which one to pick, please help me with this and if you know of other styles that have what I want tell me thx