Anticipation is a reaction to an indicator. You're being purposely difficult, because you don't want to admit that "reaction" doesn't just mean what you do to avoid a punch. Brains react to a large amount of stimulus, and only a small portion turns into muscle movement. A larger portion turns into secretions, and another portion occurs entirely within the brain.
But go ahead and argue. Your arguments won't change (they rarely do, except to dodge the original issue), and won't add value unless they do change.