Many personal trainers and fitness instructors have embraced the growing body of information that points away from isolated muscular conditioning, and toward integrated, total-body functional conditioning.
I would LOVE to see more personal trainers, fitness instructors, and "weight-management" counselors embracing the growing body of science that points away from isolated nutrient shakes and bars, and toward nature's optimally integrated, functional and simple REAL FOOD.
Sure, we humans have crapped up the oceans, the soil, the air, the water table, and the genetics of our food supply, but I'm still willing to bet big money that a supplement in the form of a pill, shake, or bar is NOWHERE NEAR as nutrient dense as a plate of fresh fish/meat, veggies, and rice/grains - and NOWHERE NEAR as effective at giving your digestive system (aka your second brain) a good workout from one end to the other :-)
I know first hand that there are people who cannot chew, cannot digest solid food, cannot tolerate enough food to absorb sufficient nutrients, and so on. If you are one of these people, and you know why this is the case, of course you have to sustain yourself with meal replacements. If you are one of these people and you don't know why...please find out. If you are NOT one of these people but you are sustaining yourself with meal replacements instead of meals, you are on your way to becoming one of these people.
Let me put it this way... did you notice a difference in quality between the replacement referees and the REAL refs? Same thing with meal replacements.... one pitfall after another. Please have a healthy meal, and a wonderful day.