Which of the following technologies would be the most useful to you for monitoring heart rate?
foot pod
stopwatch
gps app on your phone
pedometer

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

One of the students at your school posted akward and embarrissing pictures of another student online

Example of health promoting behavior