Idiom:

Saying is one thing, doing is another thing ( saying is easier than doing )

Hit the book:
Collate
Unequivocal
Subsequent
Exacerbate
Epidemiological
Rodent
Buzz
Volition
Conjoin
Social bonding

When the researchers collated and compared the data from their volunteers, they found, for the first time, an unequivocal correlation between exercising on a given day and subsequent drinking, especially if someone exercised more than usual. As the scientists wrote in their study, which was published recently in Health Psychology, "people drank more than usual on the same days that they engaged in more physical activity than usual."