Water and start off by just walking. Build your stamina and the speed. When that "stops" working, shake up your routine and try lifting weights, when that "stops", go back to walking. Water, water, water......then you pee all night long. Really cramps the sleep cycle but....wooo baby! Do you look good!

Check with your local bike shop. I bet they can find something that works for you. LJ's right though. Don't try to start out with a racing saddle. Have the bike shop get you a "comfort" saddle that's appropriate for you.

Beach cruisers are fun and work great, here in FL you can get great ones that are ten-speed and amazingly comfortable. Don't know about anywhere else. Another plus is the shock absorption that they offer and that they are just cool, retro, and fun.
They can hold anyone.

The problem is i dont have much money

Then try walking. Just moving at all is a start. I was glued to my couch last year. This year I am forced to walk all over campus and it has really helped me feel better. Try a short walk.

Most bike shops have used bikes or can point you in the right direction.

I wholly recommend swimming (and food intake control). I took up swimming this year and it has been excellent. I've lost a little weight without changing my diet (about 2lb per month, starting at 175), and I'm so much fitter and toned, so some of the weight seems to have moved from the flabby areas to the limbs. So I look like I've lost twice as much weight as I have.

You say you worry about what people think when you swim?

1) stuff them. could you feel a whole lot worse? Why let them make you feel that way?
2) join an adult swim program. You're old enough and you will find that no-one will care about your size. Kids are cruel, adults are in the same boat.

As for the rest of it, tell us about your current diet. What do you eat and when? and why? Do you snack while watching TV? stop watching. Get addicted to the internet instead. if you're using your hands to type, it's hard to use them to eat. etc.

But above all, you've got to really want to do it, and to really want to do it you need to think about what your life will be like when you're thinner. What will you do? What excuses will you no longer be able to use? What are your excuses for not losing weight now? (I'm not dissing you here -everyone has excuses) For example, some people use being overweight as a mask for shyness. If you are shy, how are you going to deal with this when you no longer have your weight to hide behind? If you don't have an answer to this, it gives you an excuse for not losing weight. etc.

Good luck, you're doing well so far.

where do you live? rough vicinity will do.

How many times have you "done Atkins"?

If the answer is more than once, then it's a bullshit plan. A proper diet/plan/regime is needed only once. Anything that you need to repeat is a "yoyo diet" and at best is pointless.

Start slow. You didn't get fat overnight and neither will you get thin overnight. Don't drinkn soda, avoid anything with corn syrup, drink plenty of water.

Big boy, stop playing the "yes, but" game.
what should I do?
walk.
yes, but I don't like to walk.
get a bike.
yes but I don't have much money.
repeat ad infinitum.

no one on this board really gives a shit if you lose weight or if you die of a heart attack at 19 and have to be lifted out of your house by a crane.

If you really want to lose weight, then stop playing the "yes, but" game and get up off your ass and take responsibility for your life.
/sermon

A point well (if brutally) made. We can give you advice, we can support you, but we can't take your weight off you. We can be here for you, but we don't know you from Adam and it's no skin off our noses if you continue to bloat. We could read "Fat boy exploded" in the paper and not know it was you. So now it's on you to put up or shut up. I look forward to seeing your 10lb loss post. I wish you well.

I have to agree with the previous two posts.

Here are some additional suggestions: Go up and down the stairs, costs nothing and it's great exercise. Do you have any dirt trails near you? Maybe a park? Go walk over there, look at the birds and try to identify the flowers you see, it keeps it more interesting.

As others have said, you didn't gain the weight over night you will not lose it overnight. Concentrate more on changing your habits, don't worry so much about a diet, as you increase your activity level you will reduce the food intake and burn more calories.

When I worked in a bike shop we special ordered an "industrial" bike for a customer. They are built to carry loads and might be a good solution for you. However, I'd start working out without equipment other than sturdy shoes. The pool idea sounds great and would get you your workout without injuries which could halt progress. Are you able to talk to a doctor about this?

I've "done" it only once before. I didn't follow the plan the way I should have. It was my fault that it didn't lead to ultimate success as I quit caring about my food intake--a purely emotional decision.

BTW, do you consider every time you tried to eat more healthfully and blew it a "yoyo diet"-?