Could my Green Smoothies be making me tired?

[Guest guest]

My husband and I have been drinking 1 quart of green smoothie 6 days a week for

a little over 30 days. After every smoothie my husband complains that he is very

tired. He wasn't as tired before he drank the smoothie. Has anyone else

experienced this? I myself don't feel any change. Here's what goes in our

Vitamix for our Green Smoothies

2 Cups of water or coconut water if I have it

4 large handfuls spinach

2 frozen bananas

1 C of frozen mixed berries

5 frozen peach slices

5 dates

This is usually give us 2 quarts of green smoothie and 1/2 pint for our 7 year

old. I think I need to add more water in order to get it back up to a full pint

for our son. lol

Any thoughts or suggestions would be a big help!