Based on the context and the answer, generate a question. 

Context: I need to go back on my shake for breakfast , shake for lunch diet . It SUCKS hard core , but it is a great way to limit my calories and maybe my amazing expanding waistline would shrink a little . If I ' m going to look pregnant and need maternity clothes it would be nice to get the reward of sweet baby toes .

Answer:

You do n't have to count calories the shake is pre mixed and ready .



Why does shake for breakfast and lunch limit calories ?