are u fit  

Normally everybody thinks they are fit but it is not so....unless you conform that by checking your body ....
but it is not needed here just do some exercises that i mentioned below to check whether you are fit or not........
HEART CHECKING:
for checking whether your heart is healthy or no there is an example.....
first climb up in a stool of nearly 16 inch in height.... (if your height is less than 5'3 then take chair height as 14 inches........

Now step on in the chair with your right leg first and then your left leg ......
get down from the chair by keeping your left leg down first and then your right leg.......
continue doing this for nearly 5 minutes .... and now it is the time to check your heart
TAKE REST FOR 1 MINUTE AFTER DOING THIS AND CHECK YOUR PULSE FOR 30 SECONDS
if you are unable to complete the 5 min. you are getting old

IF PULSE RATE IS BELOW 30 YOUR HEART IS VERY HEALTHY
IF PULSE RATE IS BETWEEN 35-45 IT IS NORMAL
IF PULSE RATE IS BETWEEN 50-75 IT NEED TO IMPROVE
IF PULSE RATE IS MORE THAN 75 YOUR BLOOD IS LOW