My time came when i was 50 when i climbed under a valueliner mack truck ,simply to re- tighten the speedo tooth counter on the gearbox . Getting in there was easy but when it came time to get out the truck had lost some air so it sat lower . Yer it had done this before and i've just climbed up between the chassis and tailshaft to get out , well just twisting and turning to start to get out i realized , " I'm too old to do this stuff anymore ".