I been tossing around the idea of going to BJJ classes for about a year now, and I should have a big influx of money soon so I was thinking about maybe starting pretty soon. My only problem is that I'm in terrible physical shape. I smoke a little over a pack a day and I'm overweight. I'm very easily winded. I was thinking that if I just went for it it'd be miserable and I wouldn't be into it, so taking some time to slim down a little and quit smoking. I'm a pretty shy person and tend to have anxiety issues and trouble with people, so I figure losing some weight would help me in those areas too. The thought of enrolling in a class in the shape I'm in now is terrifying. So my current plan is shape up a little, quit smoking, and enroll sometime around the new year. What do you think would be the right call?