One does not have a human body in both heaven and hell but a body called ‘Vaikriya’ body (formless). Only in the state of complete liberation (Moksha) is the Soul free from having a body. In all other forms the soul is always bound by a body. Every life form binds ‘karma’. On binding merit ‘karma’, one gets a higher life form and by binding demerit ‘karma’, one gets a lower life form. In short, one is born according to what is reflected in ones’ balance sheet – account of credit & debit. One can even be born in the form of an animal. Yudhisthir attained self realization (Atma gnan) from Tirthankar Lord Neminath Bhagwan, cleared all his pending karmas and went to Moksha in that life itself.