Daily Undulating Periodization (DUP): How to Build Muscle Fast Daily Undulating Periodization (DUP): How to Build Muscle Fast By Eric Bach|2021-11-23T15:39:34-05:00August 24th, 2020|Blog, Building Muscle, guest post, High Performance Exercises, Sports Performance| Daily undulating periodization, also known as DUP is one of [...] Read More 10