If you have an illness one way or the other the body will reflect it.This is the primary checkup that you can adopt at home.
If you are okay in overall appearance, most probably you will be healthy.But at the same time you have to take care of viral diseases and other fast spreading flues and all.
Next thing that should be taken care of is that ,you should be well aware about the common diseases and its symptoms.It will help you to identify the issues as fast as possible.
One common measure taken to identify whether you are a healthy person is calculating the BMI.
BMI = weight (kg)÷height²(m²)
For a normal person bmi lies between 19-25.
You can check BMI also.
Given below are some health tips.You should know ,
1)how your body works—how your body uses the food and drinks you consume and how being active may help your body "burn" calories 2)how to choose healthy foods and drinks 3)how to get moving and stay active 4)how getting enough sleep is important to staying healthy
5)how to ease into healthy habits and keep them up 6)how to plan healthy meals and physical activities that fit your lifestyle
These are quoted just to question yourself.