India, Feb. 14 -- Can sexual intimacy with your partner provide relationship satisfaction that lasts much longer than just the act itself? According to new research published in Social Psychological and Personality Science, it really does.

Researchers discovered that the positive afterglow after having sex can last up to 24 hours if the act was consensual, done as a mutual decision or initiated by one partner. They also found that sexual rejection between partners could lead to a negative ripple effect that lasts up to several days.

With satisfying sex having so many benefits, the infrequency of sex between long-term partners raises the question of how sex can have such a profound and lasting impact on a relationship if it is not a dail...