You have decided that you would like to participate in a sport in your community or school. decide which sport you would like to go out for based on the skills that are required for that sport. which sport will you choose, which skill-related fitness abilities are necessary for that sport, and how will you prepare for your upcoming season?

First , determine what kind of physical ability that you excel at and what is your physical weakness
for example, you're very agile but you have no strength.
Second, you determine what kind of sports that required a physical  aspect that matched yours
For example, Football need agile athletes for certain positions
Third, analyze what can you do in that sport with your physical ability
Since you're agile but you got no strength, you are useless on the defensive line, but you can be really useful as a Runningback
Last, prepare a training regime that you will need to do in order to fulfill your role in that spport
for example, cardio conditioning on Monday- Wednesday, sprint training on Thursday, etc

Probably because you wake up early. even when i get a good nights sleep i still feel tired if i wake up early. or maybe you just need coffee.

Pe.dometer would be the most useful to you for monitoring heart rate.