I recently read a few journals regarding milk and its use post workout. I love milk and always drank a lot as a child, however I discontinued its consumption after it being put as a ‘less clean’ food source for various reasons such as Lactose, Carb content and hormones. However, after reading a great deal about milk I have come to question why people seem to think of it as a lesser dietary source, or one to avoid (unless lactose intolerant). So I decided I would utilise milk a lot more, its tasty, its cheap, its convenient, as far as I was concerned there was nothing to loose by at least giving it a go.

The Science
OK back to the topic in hand, I am going to use some typical nutritional figures to compare chocolate milk and post workout recovery products. A typical chocolate milk will contain 300 calories, 18g of protein, 44g of carbohydrates and 6g of fat, a typical post workout supplement would contain 300 calories 25g of protein and 45g of carbohydrate and 2g of fat.
Carbs: Post workout supplements will usually be made up of a carbohydrate such as dextrose, chocolate milk has a mixture of sucrose and lactose. It has been found that no significant difference between dextrose and sucrose in terms of glycogen storage. An advantage of sucrose is that its 50% fructose and this supports liver glycogen better than glucose on its lonesome. Liver glycogen use occurs to a significant degree during exercise, the amount depends on the intensity of the exercise of course. This points to the preference of choosing sucrose over dextrose (glucose) post workout.
Fat: In terms of saturated fat both items in question have a similar amount but milk will have a higher overall fat content. Fats bad post workout right? It slows everything down and blunts high gi carbs and fast acting proteins getting to our muscles fast? Well tests have been done and its been found that post exercise ingestion of whole milk was actually better for increasing overall protein levels then skimmed milk. So it looks like post workout fat is actually not something we should avoid, in fact it may even be beneficial in terms of protein synthesis. At the end of the day it doesn’t really matter, but if you want to save on calories go for low fat and if you are interested in the potential of faster protein synthesis go higher, either way its not something to get worried about.
Protein: Post workout products typically use whey protein isolates, these in theory are favourite as they are readily broken down and easily processed by our bodies, leading to the assumption that it would be taken up by the muscles faster increasing anabolism. Milk protein is made up of 80% casein and 20% whey. The verdict on whether whey or casein is a better protein is split currently. What is known is that faster does not equate to better when considering the total anabolic effect of protein. Its been found that milk proteins have the best nutritional quality, proposing a synergistic link between casein and whey. So which is better milk protein (whey/casein blend) or whey in an isolate form? Well these two have not been consistently compared, thus a conclusion can’t fully be made. What can be said is both seem to be beneficial post workout.
Micronutrients: milk boasts some strong stats; 624mg of calcium, 70mg of magnesium, 920mg potassium, 558mg phosphorous…when comparing such with a typical post workout supplement, milk comes out on top. I will also add that milk has been found to be superior to water for providing rehydration following exercise (down to its sodium and potassium content).
Other than the above you might still opt for your post workout supplement, I mean milk hasn’t shown to come out markedly above, but definitely on par if not slightly better. However, consider the saving your going to be making, the markup from milk to a supplement must be several 100′s of percent, or at least double the price. On the other hand, how convenient is milk? Powders are non-perishable and don’t need to be kept cool so they don’t go off, so its much more convenient. Another argument to made is taste, although its subjective the supplement companies know how to make a great tasting shake.
What do I do?
I often try and take a balanced approach to nutrition, as I am still discovering what works best for me, but my post workout shake consists of:
25g Whey, 350ml skimmed milk, half a tin of peaches.
For me its ticking some boxes: using milk I get the potential benefits of it including the fact I like the cost and its very cheap, the whey provides a convenient and easy way to boost the taste of the shake and up its protein content, the peaches are dead cheap and again add to the flavour, in addition they have a high glucose to fructose ratio so are pretty ideal post workout. I will experiment with this and find what gives the best recovery, I recommend you do the same with your own post workout protocol. And hey if you fancy a Frigg or Mars milkshake post workout then GO FOR IT, its likely to do you a lot of good.