The Chromatic Ladder
How to play
Start on the low E string. Play frets 5, 6, 7 and 8 with one finger per fret, then move to the next string and repeat.
Go up through all six strings, then come back down. Keep the notes even in volume and timing, with no buzzing and no notes cut short.
Keep your fingers close to the strings and press just hard enough for a clean note.
Challenge
Run the whole ladder at a tempo you can keep perfectly clean, then nudge it up a few BPM. Stop as soon as it gets sloppy.
Tips
Speed will arrive later. Prioritise clean and even.