False because mainstream smoke is defined as smoke from a cigarette or pipe. Second hand smoke is smoke that has been inhaled by someone then exhaled, making you the "second" one to breath it :)
You only have the questions.... there’s no video or picture to look from.
If you're running at the same intensity for a mile, you are performing a <span>cardiovascular exercise.</span>
C. John, "Mr. Calm," starts getting into fights at school.
