Answer: because the salt levels in the ocean are higher than those in a swimming pool.
Basically, the water in the sea is more viscous than that in the swimming pool, meaning that it is more dense. This is because of the concentration of the water (it contains salt and many other substances that makes it more concentrated). Therefore, people can float more easily in the sea.
Answer: Hyperventilating oxygenates the blood slightly more than breathing normally. This means that when you subsequently hold your breath, the extra oxygen in your bloodstream provides a few extra seconds worth of "breath holding" before the reflex that tells you to breathe kicks in.
Answer: Yes, generic drugs are the same chemical as a brand name medication. An example is Clonazepam, the generic name of Klonopin. Both are the same things. Generic medications are cheaper than brand names because you are not paying for the advertising that the name has contributed to.
Answer: Im sure there are several. In all my collecting of partially useless information I have found that dubya dubya dubya dot EROWID dot org is an amazing drug resource that spans pharmaseuticals to all naturally occurring intoxicants. Specifically I would think any amphetamine, of which there are many, would show up. Dexedrine is the first to come to mind, or adderall....There are many drugs prescribed for ADD, ADHD, AADD, and other impulse controll behaviors and possibly for things like epilepsy. Its not concrete, but I hope it helped.
What was the name of the swimmer that was on drugs?
Answer: This kind of swimmer is recognizable usually because of his body position in the water is at an angle rather than vertical, you may observe the subjects head surfacing in and out of the water as they struggle to keep themselves afloat.
Answer: Megan McDole of Greensburg Indiana. She is about 3 foot 5 and is considered a South Pole elf. Megan is a freestyler and a breasttroker. She is naturally at a disadvantage due to her height so the fact that she is a better than average swimmer is quite impressive.