I think it really depends on your build. If you're a small to
medium build, bulking up might be a problem as you might only put
on fat instead of muscle. If you don't want to use equipment or go
gym, the most you'll have is a lean toned body instead of
muscluar.
Taking Weight Gainers isn't advisable unless you plan to hit the
gym for the rest of your life.
If you're taller and abit "big-boned" then its easier to do it as
the body frame can support bigger size muscles.
