Pair opposite movements such as chest/back or biceps/triceps. This can keep quality high while saving time.
Excellent for upper-body density without trashing one muscle too quickly.
Use the method to improve the result, not just to make the workout harder. The client must still move well, recover well, and understand the purpose.
DB press 8-10, cable row 10-12. Rest after both.
Month 1: learn the format and keep effort controlled. Month 2: add a set, round, or slightly more load. Month 3: increase intensity only if form, recovery, and confidence are strong.