A training phase focusing on eccentric training is one of the most productive ways to build strength, increase lean muscle, prevent injury, and even improve flexibility.
The saying, "I'm going to the gym to lift some weights to gain strength and size”, should be "I'm going to the gym to lower some weights to gain strength and size” because the eccentric phase delivers better results.
I've just completed a phase of 5/4/3/2/1 strength, and now I will move into a new phase of emphasising eccentrics. I'll share my new strength program at the end of this post.