how often should I take whey protein shakes? I train every other day, but my training alternates between 30 minute run (entering the great south run) and body training, sit ups, sqauts, press ups, eaxch 100 of them. But when is the best days to take the shakes? On body training days? When I run, and on body training? Or is it simply better to keep protein levels up by taking 2 every day? (I have lots of protein in my diet - whole grain cereal,, chicken or tuna salad, and a ready meal, with water all day.