
It's time to tune up your training routine. This article will rate exercises for each muscle group from "beast" to "least." Here is the scale:
To maximize the muscle building process, you need to make better choices. Start by looking at your current training routine to see if it's peppered with a fair amount of beast exercises. I recommend at least 2 beast exercises per major muscle group, per week, and at least one beast exercise per minor muscle group, per week.
For the back, I typically recommend 3 beast exercises per week. It is good to have a deadlift variation, heavy row, and some sort of pull up or inverted row. You may also choose to use 3 beast mode exercises for quads each week.
After the insertion of beast mode movements, it's now time to consider the rest of your exercises. If you are using any movements found in the "least" category, consider removing them and swapping in a "better" category lift. Only use "least" category movements when you have no other options, or to finish off a muscle group after a hard workout.
Each section below contains exercise recommendations for each body part. They are minimum, but reasonable recommendations. If you want to add in another exercise for major body parts per week because you feel it's necessary, have at it.

Chest exercises: beast to least
It should be no shocker that the bench press (and variations) are at the top of the list. Dips fall into the beast category as well. They were once considered the "upper body squat", and should not be dismissed.
You will also notice that I rank exercises such as machine bench presses above dumbbell flyes and cable crossovers. Understand that I am not telling you to never use these "least" exercises. My main point is to choose the beast and better movements first.
If you want to finish off your workout with flyes, pec dec or crossovers, have at it. You've already destroyed your chest, so a finisher using a least exercise won't be a bad thing at all.
Most trainees give a half-hearted effort on shoulder training day. Make sure you blast your shoulders with at least some form of heavy dumbbell or barbell press before moving on to upright rows or Arnold presses.
Front delts are hammered hard during chest training and require no real direct work. You're better and beast exercises will do a good job blasting your side delts, so if you do use a least exercise, consider bent over reverse flyes.

Beast exercises should include a row, pull and deadlift variation. I recommend starting your workout with the deadlift variation. You can choose either deadlifts, low rack pulls, the low rack pull and power shrug combo, or snatch grip deadlifts.
Next add in a row and a pull. Use barbell or dumbbell rows and pull ups or inverted rows.
Pick a better exercise that you enjoy, or that addresses a weak body part. Least back exercises have little value. Avoid them at all costs unless you have no other options.
Quads are a no-brainer. Squats are the king of all barbell exercises. Do them. After squats add in front squats or leg presses. You can also add in paused-squats after your main squat workout is complete, but be warned - they are the holy bringer of DOMS (muscle soreness).
After your squat-o-thon, pick assistance exercises that fit your needs and available equipment. I happen to like leg extensions, as did Tom Platz, so if you do utilize a least exercise it gets my vote.

Hamstrings are the red-headed step child muscle group of bodybuilding. Too many gym rats throw in a couple of hamstring movements but give them a half-assed effort. Don't do this. You need to build and strengthen both your quads AND hamstrings.
Really any combination of beast and better exercises will do. Try them out, see which you prefer, and get crazy strong on them.
Least hamstring exercises typically suck, so I would avoid them unless you are out of options.
I have to be honest here...I've never seen natural lifters build quality traps using only mind-muscle connection, controlled bodybuilding style movements. In my opinion the traps need heavy weight and/or explosive reps.
My traps really started to come in when I began focusing on power shrugs and deadlifts. Explosive Olympic style lifts like cleans are a good addition to this equation. I also prefer upright rows as the final nail in the traps building coffin when I don't feel like going too heavy on a given day.

You can never have enough triceps strength. Focus on the big hitting exercises as much as possible. Then and only then, when your triceps are trashed, should you add in better or least exercises.
The triceps are worked hard during the week from bench and shoulder pressing movements, so there is no real need to perform an excessive amount of direct tricep work. With that said, you should still focus on quality when you do hit this muscle group.
We all know most gym rats overtrain their biceps. Please don't do this. The biceps are one of the smallest muscle groups in the body. You don't need to hit them with 40 sets each week.
If you can, make chin ups a staple. Understand there is a difference between chin ups and pull ups. Chin ups are performed with your palms toward your face. Pull ups are palms away from the face.

If I had a dollar for everyone that complained their calves wouldn't grow, I'd have a lot of dollars. The problem, as I see it, is that most lifters rarely attack calf exercise progression with rabid intensity.
Try this...using lifting straps, hold a barbell in front of you like you were going to shrug. Instead, perform standing calf raises. Try 3-5 sets of 8 reps, adding weight each workout as long as your reps are quality. See just how strong you can get on this movement.
Jump squats are another amazing calf building option. Give them a try.
If your ab workouts consist of 1,042 crunches per day, please stop the violence. Add non-spinal flexion core work as a staple. After you finish hitting your abs with planks and/or roll outs, then move on to something with resistance like cable crunches or weighed sit ups.