Yes possible.
But it is tough to keep your weight in balance without going gym.
Why people go to gym?
To keep fitness well and in control. If they went to gym their body, muscle, biceps, triceps will grow up and their fitness is be good.
If you don't wants to go to gym "No Problem". You can control your weight by dieting or few essential physical exercise and daily minimum 1-2 KM walk/run.
That's be good for you.