THE ESCALATOR. Muted strings: 6th, 5th, 4th, 3rd, 2nd, 1st and back.
4 notes per string, from the 6th to the 1st and back in reverse.
You're trying the free version with 2 exercises. The full version includes 7 categories of different exercises every day, with spider, legato, string skipping, stretch and much more.
You've completed today's warmup. Great session!