Protein drinks - proper use

It depends when you're getting to bed and how strong your tolerance for caffeine is on that point. Can't really say - 126mg wouldn't do anything to me, but then I got used to downing a Dr. Pepper a couple of hours before bed for many years.

Anyway, are the cardio and strength on different days? I'm not familiar with the program. If they are, I would say have one after the strength for sure, and after the cardio if you need it according to the macros for the day. If the workouts are on the same day, just have one when you're done - I can't imagine it'll be much fun doing cardio immediately after downing a protein shake.

You should always take a shake post workout, especially the weights as your muscles will be depleted and screaming for it.

Depends on the intensity of the cardio but it won't hurt to take one after that too.

You should look on the shake as food that is supplementing your existing diet.

I'm not a fan of the manufacturer of the shake you are proposing (I've used a couple in the past when I didn't know any better), once finished take a look at MyProtein.co.uk, great products and you will save money too.

Use this code and you will get 5% off your first order too: MP354864

To be honest most of them are around the 200cal mark per serving.

If you are loosing weight by diet I would just go for a standard whey protein, you don't need all the extra stuff they are 'filling' their products with, if you want green tea then drink it etc.

If you want to have very low cal protein then you need to go for an whey isolate product, almost no carbs and very pure but also the highest cost.