Miscellaneous Don't hunch over the cello, and don't twist your back. This will result in back pain problems later. If you have long arms, you might try the Tortelier end-pin. The goal is to play with evenly distributed tension, not to play without tension. Tension must not be allowed to build up in any single part of your body.
Breathing is one of the best things to do in order to prevent the build-up of tension.
Always anticipate the next note. This will serve you well because anticipation is part of music itself. Whenever two joints meet, they should form a curve, not an angle. Angles block the line of power. A good exercise to help with maintaining a sense of pulse is to alternately lift each foot off the floor.