Answer:
When you are exercising, your muscles need extra oxygen some three times as much as resting muscles.
This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing
I believe that answer was Yet
Answer:
1. cliff diving
2. diving in the shallow end of the pool
3. running around the pool
4. swimming in a thunder storm
