I weigh 190lbs and am 6'3" 31yrs old.
Sanchin why are you after hitting 210 lbs?
Your BMI will go from 23.7ish to 26+. Ok so long as you are fit but later in life it might give you a problem with weight.
At 31 I'd stay a steady weight unless there is some over riding reason for you to gain muscle.
BMI is garbage. Using the Austrian Oak's numbers plugged into the BMI formula, he is morbidly obese. It is an overly simplistic formula which ignores far too many aspects of physical fitness .
For example: according to the linked BMI calculator I am, at 5' 8", 195lbs, 15% bodyfat, currently doing two full-body weight training routines weekly, training martial arts for 1.5-2.0 hours five days a week (more when I can make it to classes), eating a very healthy diet, an obese individual.
Also, check out the " What Does All This Mean? " link on the CDC page. I very much like how they break down the body mass index as one aspect of a person's health as opposed to a calculation showing the fit and muscular are identical to the overweight and out-of-shape [I've had clients who've used my measurements and shown me I'm obese - it's a coming defense when training and dietary changes are suggested]