Once you have your target heart rate calculated pick a cardio activity you enjoy doing. This could be running, biking, swimming, etc. Anything that elevates your heart rate.

Now do this activity for 20 min. maintaining your target heart rate you calculated for yourself. This means stopping every five min. to take your pulse, you can do this by placing your index and middle fingers on your neck or wrist. Count beats for 15 seconds and multiply by 4. If you are below your target heart rate you need to work harder, if you are over you need to slow down.

Record what activity you did, how long you did the activity for, and if you were able to keep your heart rate in your target zone for 20 min.

The three ways to evaluate a risk factor are: decide if you have control over the risk factor compare the benefit vs. the risk of a choice

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses.b) the infected individuals happened to be infected with all three virus types.c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly.d) the human was likely infected with various bacterial strains that contained all three rna viruses.

Which method of administration would result in the highest concentration of the drug in the brain?