DeLorean Lag

Extreme tiredness and other physical effects felt by a person after a trip across time. Comparable to "jet lag"; this term affects the travelers time arrival in the past/future as opposed to the time zone differential of jet lag.

3:00 PM November 1st, 1885:
Marty:"This is heavy...I'm so tired..."
Doc: "Martyyyy, how on earth could you be tired?"
Marty:"I have DeLorean lag. I left 1955 at 5:00PM and arrived here at 8:00AM"
Doc:"Great Scott!"