podEnglish Beginner 12 Yoga

Talking about fitness
exercise : is a  activity with your body.
fitness : good fitness means you can do exercise very well.
yoga : is a kind of exercise from India.
breathing

can : present ability
- I swim every day. -> I can swim very well.

could : past ability
- When I was a child, I could run very fast.

1.
A few years ago, I could run fast.
Now I get out of breath very quickly.

2.
Too much exercise can be dangerous.
A few hours a week should be enough to begin with.

3.
I could do gymnastics and play hockey when I was in school.
I'd like to be fit again.