I'm starting to feel better now. I found the problem was I wasn't getting enough vitamins into my system. I'm taking multi teen vitamins now (with added iron). I took 2 weeks off martial art training. Hopefully I should be back by next week.
If you are excessively tired it can be one of a few things: Sleep deprivation over a course of time... even just missin 1 hour a night can build up over a few weeks. If you are training too hard and aren't fully recovering. If you aren't getting enough nutrition which is linked also to not recovering. Lack of carbs, vitamins and such can make you feel tired. Or you are anaemic which can be caused by training to hard and not eating enough. Go to your doctor. Get your diet checked out, (don't lie about it), get a blood test for anaemia too.
Are you asking me this question because I'm home schooled? Ah yeah I do actually go outside otherwise how would I get to places like the library? I bike and run a fair bit around the place.
Yeah, but the social aspect can have an influence too. Social interaction is necessary for humans, and school is a good environment for this. If you are home schooled and don't have that many friends then it can have physical as well as emotional effects. TheCount seems to have summed it up best, do any of those options sound appropriate?