This History Channel produced video gives an extensive documentation of the evolution of drugs and drug use.  This is useful to watch when discussing Chapter 9 and Chapter 12 of the Health book.

Use this link to perform push-ups at the proper pace.

This link provides the proper speed for the curl-up test.

This video demonstrates the proper technique for a curl-up.  This exercise should be done to the cadence that is on the video or you may use the link on the teacher webpage.