Today is the day
I'm going to start teaching you how to live a healthy life without spending all your time&money.
This is my first advice:

Learn how to enjoy breathing
with every breath, your lungs try and accumulate the oxygen you need. if your breath is short, they can never fulfill their duty. and as a consequence, they even become smaller, or better said, their capacity of expanding decreases.
if you want to inhale more air, try to learn how to love this experience. when you get up in the morning, sit for one minute in front of your open window and inhale deeply. your heart will start pumping blood more effectively. your whole body will be thrilled. try to be conscious of the fact that you're breathing and that the air is making you feel good.
moreover, try and enjoy atmosphere: the air after the rain, the air of the mornings, or even the air at night. not to mention ocean salty air or mountain-high atmosphere...

that's it for my first day.

never forget to enjoy life!