I got into a fight recently, the first for a while and didn't realise what bad stamina i had. I train often but i still tired very quickly. So I have started running in the morning, will this help? I run around a grass track in barefeet but my friend was telling me that if i am running in an incorrect way or at an incorrect time that i could do myself more harm than good. is this true? and which way should i be running?????