My normal does this....he cruises his viv and then lays on the glass trying to slide it open....so I open it and he will come straight out....he crawls round my hands and goes round my neck etc....then off to explore the flat....I have snaked proofed anywhere that looks like he may get into....he often stays out for a couple of hours and has a great workout.....then is happy to go back in....he does this 3 to 4 times a week