New york city guitar player Ron Jackson gives a sweep-picking exercise developed to stimulate both hands.
You don’t need to be a pyrotechnical electric gamer to benefit from having some sweep-picking moves under your belt, as the approach works just as well on the acoustic guitar.
This efficient method includes utilizing a plectrum to play a series of single notes on surrounding strings in a consecutive motion, instead of rotating pick strokes, resulting in a fast, fluid noise.

The notation is available at https://bit.ly/36SxVDk.