Work that Thumb!
Sometimes we just need a simple exercise for working on a single aspect of our technique. This exercise is good for working on the stamina of the thumb and for developing your accuracy:
I find this kind of slap exercise a great thing to practice when in between gigs that don’t actually require slapping. Regularly using this is a great way to keep your thumb and slap technique in shape.
Some people don’t find this kind of approach useful (it takes different strokes!) but for me I find having a repertoire of simple exercises is a great way to lend structure to what I do and stop me idly noodling without purpose.
This should be very simple for anyone with any slap technique at all – just running up and down the major scale across the E and A strings. The general idea is to start at a slow tempo to work on your muscle memory for finger positioning and thumb technique, and then build up in speed.