It might have been a TV Movie, I seem to remember it being on Channel 5 as a kid (in the UK). A teenager finds some sort of online community and it tells him to try certain things like slowing his heart down (for flight in space), and being able to breathe any gas. He breathes in helium and has no effect on him. I think it may have been around the 90s. American film; I thought it had Matthew Broderick in it, but I looked on IMDB and can’t find the one I’m looking for on his filmography. But the whole film is about him being an adopted alien on Earth preparing to travel back home. Thanks for any help 🙂
“Flight of the Navigator”(1986)
http://www.imdb.com/title/tt0091059/
This probably isn’t the movie you’re looking for, but the boy in it always reminded me of a young Matthew Broderick! I figured I would just throw it out there!
In “Flight of the Navigator” the boy was not an alien. He was abducted by an alien spacecraft which returned him years later. Due to time dilation while aboard the craft, the boy had not aged. A mishap occurred as he was being returned, so the US government was able to capture the spacecraft and the boy was held for study.
Wild guess. . . .The Powers of Matthew Star? It was a sci fi tv series which ran from ’82-83?
No, cheers for trying
Or maybe “D.A.R.Y.L”(1985)
http://www.imdb.com/title/tt0088979/
Not the one, thanks though
D.A.R.Y.L. was an android, not an alien