Yes you can: Get fit! Start now... you know what you have to do! Great to start young:

Get into it: you know it's good for you! Some winter encouragement... ...and, if you're not sweating after that lot... (well done that boy!) ... you ought to be! Satisfaction guaranteed! Check out the archive of 1600+ posts. Here's a random choice to get you started: CLICK HERE - a focus on abs.  

"Chest day" - as we say when going to the gym. A pectoral focus today, then. No "man boobs" here: just everything built with bench presses and flies at various angles, with added pushups in suitable configuration.