Doing sports for the first time as a sophmore? Help!!!!!!?

Don't worry, even if you don't make the varsity team, your teammates will be supportive of you. If you're doing this to lose weight, don't think that running 50 miles a day will help you lose fat! Sprints or High Intensity Interval Training will make you lose weight. Be sure to invest in some really good running shoes like the Nike free flyknit. Wait for it to go on sale though, it costs $160 but I got it on sale for $75. You should start training now though, you shouldn't put off your health until New Years! Go join a gym with an indoor track, pool, etc. don't go for a cheap commercial gym that's "$39.99" a month but instead a reputable gym, largest you can find that has the most facilities. Be sure to take lots of supplements, GNC MegaMen has everything a human needs to survive! If you get burning sensations in your shins, that's shin splints, read up on sports medicine and learn about common injuries like shin splints so that you can both prevent them and know what to do with them.