Walk into any gym anywhere in the world and there are people doing all kinds of weird things.  A lot of people must think some of the things I do in the gym are weird.  But there is a difference between weird and effective, and weird and pointless.  You need a good plan every time you enter the gym.  You should be out of there in less than an hour, feeling like you left nothing on the table. Your time in the gym should be based on intensity.  You should be working hard if you want to see results.  If you are working out for two hours, are you really pushing yourself?  

 A typical workout should consist of four parts, the warm up, the heavy part, the "pump it up"part, and the finisher. Here is a brief outline of what each of these means.


Warm Up

You need to be warming up properly.  This does not mean touching your toes three times, swinging your arms from side to side and then loading three million pounds onto the bench press.  Run through a couple rounds of some bodyweight movements to get your muscles warm, and to practice some essential movement patterns.Two or three rounds of the following will do the trick.

 1. Bodyweight Squats
2. Back Extensions
3. Pullups
4. Pushups or Dips
5. Hanging Leg Raises
6. Hip flexor stretches

 Do as many reps as you feel is suitable for you to be thoroughly warmed up, without wearing yourself out.  This little circuit covers all the main muscle groups and should get your heart and lungs into the game too.

 After getting warmed up, you need to get some mobility work in.  Hopefully you have access to foam rollers, and if you don't you can make do with a lacrosse ball (or something similar).  On lower body days roll the knots out of your glutes, lower back, IT band (the outer edge of your thigh), and the inside of your thigh.  After rolling these out, do some stretches like these to get your hips greased up.

Those stretches will mobilize your hips better than anything else. After spending some time grimacing in those positions, you should run through some of these movements to tie everything together and get your body working as a stable unit.Some good movements to do this can be seen here.

On upper body days you need to focus on your shoulders in the same way that you focused on hips for the lower body days.  Think about the postural problems you have, such as shoulders rounding forward.  What causes that?  A tight upper chest and biceps. Use this time to try to undo some of those issues, and also develop awareness of which areas need some extra attention.  This is a great general outline, but be sure to add in other stretches to address your individual problems.

Heavy Part

You're all warmed up and moving like a well oiled machine. Now you're good to start working safely.  Don't just throw your working weight on the bar and go though.  Give your nervous system a chance to get warmed up too. Start with an empty bar and incrementally add weight until you reach your working weight. The first part of your workout should be focused on strength.  Work up to an eight, five, three, or even a one rep max in one of the four main lifts.  By slowly adding weight until you reach your maximum weight, you get lots of volume done with heavy weight.  Louis Simmons of Westside Barbell has found, through years of training world champion powerlifters, that it is not necessary to do absolutely maximal weight to get stronger.  His athletes very rarely train with more than eighty percent of their one rep max, and the strongest people in the world almost always come from his gym.  An example of working up to a five rep max with 100kg would look like this,
20kg (empty bar) x 10
40 kg x 5
50kg x 5
60 kg x 5
70 kg x 5
80 kg x 5
90 kg x 5
95 kg x 5
100 kg x 5
105 kg x 5

 Your goal was to get 100 kg, but you still felt strong after the 100 kg set, so you added a little bit more and went for it.  That's the beauty of this approach.  On days where you are feeling strong, push yourself.  If you are sick, or slept terribly and feel like a zombie, you may not be physically capable of giving it your all.  Listening to your body prevents injuries.

The "Pump It Up" Part

 A lot of very successful powerlifters will work up to a heavy five, three, or one rep max, do some high volume accessory work, and call it a day.  They believe that getting maximal heavy work done is the most important thing, and accessory work is done only to work on weak body parts.  For people more interested in building muscle, do your strength work first, and then work the muscles related to the main lift with lots of volume.  There are limitless ways of doing this, but the key is to do the strength work, and then move on to the bodybuilding stuff.  An example would be working up to a five rep max on the bench press, doing five sets of ten on incline dumbell bench, and then doing some tricep work.  The heavy part of your training is done to train your nervous system and muscles to work together to move heavy weight. This part of your training is done to get the muscles working and to get some blood flowing into them.  This is where you follow the bodybuilding philosophy of going for that mind-muscle connection and really feeling the muscles work with some lighter weights.  For this part choose rep ranges any where between 6-20.  For the heavy part of your workout, you are trying to break records and constantly increase the weight.  For this part your weights should be increasing over time, but you are more focused on feeling the muscles work.  Have fun here, and do drop sets, pyramids, all those things that bodybuilders love.

Finisher

After you have finished your strength and volume work, it can be fun to do a finisher to get some conditioning while you are still warmed up and ready to work. Pick a conditioning method that will take less than ten minutes, and work as hard as you can.  I wrote some ideas for conditioning in a previous post.  My personal favorites are barbell or bodyweight complexes, or a combo of the two.  This should take absolutely no more than ten minutes.  Five minutes would be an even better goal.  You've done a lot of work already, this is just thrown in to boost your metabolism a little more.
Hopefully this is a good outline to get you spending your time in the gym more efficiently.  Remember that keeping intensity up, and rest periods short is a great way to get more done in less time.  Leave the cellphone at the door.  Your Candy Crush record will never do as much for you as your squat or deadlift record.