If your boyfriend refuses to try Indian food or a new sex position, don't despair. You may just not be asking at the right time of day.

A new poll has found that men are most "agreeable" and likely to acquiesce to a partner's demands at 6 p.m., at the end of a working day. Meanwhile, women are at their most agreeable around 3 p.m., which is when they have a higher chance of resolving an argument with their partner.

Of the 1,019 men and women polled, 86 percent reported they were aware of changes in their mood throughout the day, but fewer than half thought about using their mood swings to their advantage.

If for some reason you can't ask him for that favor in the psychological sweet spot of 6 p.m., we find a grilled cheese sandwich served topless works pretty much any time of day.