haha! depends on what your goals and personal situation is. at only 38, and trying to gain weight and improve my squat a deadlift, i found myself going backwards and getting hurt all the time with the typical 4 day WSB split. i was doing quite a bit of gpp and conditioning with the sled as well. for about 6 months, i combined ME and speed in one session, and went to 2 day a week training, one bench day, and one squat/dl day. soon i found the injuries stopped happening so frequently, and i was breaking records that i set in my mid twenties.
now i find at 5'7" and 250lbs, my overall health is at risk, and i am backing off the PL and doing more of a crossfit/strongman type routine, and working out 5 days a week.