HAVE A SEAT.

Also, be sure that you select a crossover work seat that can transition easily from a completely flat creeper position for under-vehicle work to a fully upright position - and to everything in between. Typical shop seating includes either a rolling work seat for scooting around a vehicle or a mechanic's creeper for working underneath it. No matter which positions you use it in, a professionally designed crossover work seat will help you get more done with less pain by shift's end. [Extracted from the article]