My doctor told me work is not exercise! Is work exercise if you are doing heavy lifting, moving, and pulling carts ???

Of course heavy lifting is exercise. But your doctor is referring to cardiovascular exercise - getting your heart rate up for half an hour or whatever is the recommended time these days. Speed walking, jogging, cycling, that kind of thing is what he's talking about. 

Working in a warehouse is not exercise. Go on the bike machines and legs work machines in cardio at gym, exercise your arms as well.

I hear this often and I do believe your type of work is considered a form of exercise.

Also if you can join a exercise place and remove some of the soreness from your hard work. There are wonderful swim exercise classes that could do just that. good luck.

If you're a cart man pulling and pushing carts all day moving and lifting boxes and putting them on and off of trucks etc etc you're doing plenty of exercise.

Its a poor substitute for exercise. If its not causing you to breath hard to get enough oxygen then its not aerobic.  If its not fatiguing a muscle in about 10 reps then its not strength training.  Its probably only working a few muscles, and  they could be overworked leading to tendon or joint problems and torn rotator cuff muscles.

In that sense, work is exercise because you are using your muscles. But the doctor might mean that exercise should be relaxing in the sense of not straining yourself too much.

Yes but you still need constant cardio at least

20 minutes straight without a break and stretching and an over all conditioning routine with

Moderate weight lifting to stay tone and in

Good over all shape. Think in terms of what

Muscle and joint and core and over all body

Parts need to stay flexible and firm so they

Work fluidly and you can move without problems. Most people never build their forearms

By using pull up bars or rock climbing. So

They can't even hold their own weight for

Over a minute if the try to climb a wall of

Tall tree. So try to keep everything strong

Enough to support your weight and help

You survive or move quickly if you need to.

Yes, of course it is. 

He may be referring to aerobic exercise, the kind that gets your heart and breathing rate up for a sustained period of time and promotes the circulation of oxygen through your blood. That's pretty much considered the most desirable and healthy type of exercise.

IF your heart rate goes up, and you sweat.  I would say so.