You know you have reached exhaustion when unpacking the souvenirs seems beyond your ability.  It is strange how the excitement of a vacation can push you past the aches and pains of a tired body.  You can walk further than you normally do, sleep briefly and restlessly night after night, and unhealthily for days on end, all with continued stamina.  Then you arrive home, drop your bags, cringe at the piles of mail, dread the laundry and want to sleep all day.

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