Could you live in a tiny pod with six people for a year?

I ask the question in the title here because I don't think I could do it. I think I'd go a little crazy. I mean, being in Hawaii is nice, but these six scientists were more or less confined to a small dome near a Hawaii volcano in order to simulate what it would be like for 6 humans to live on Mars. The landscape was close, the conditions Martian-like as well (slow internet and had to "make" water), and I can only imagine that more than a few fights or disagreements must have been had. Sounds terrible. But they made it!