Pruning the tops leaves from tall pepper plants

[cjp1953]

I have seen this done on you tube but does anyone here do it?I have a few that have grown very tall.Has anyone pruned them back to get a fuller plant?Have you found by doing this you get more production.I talking about taken the top 2 sets of true leaves off.The plants have 4 or 5 sets of leaves.This is on my jalapeno and hot cayenne pepper plants.I have some that are still small and all are still on my heat mat.This is my first year using a mat,when do you take them off the heat?Temps are 75 to 80 degrees.All were started Feb.25th.