 101.7 FM, 11.50 AM, WDEL. 7.28 at WDEL. If you want to sleep better each night, a new survey says you should save some money. British researchers say saving money regularly can help improve your mood and your sleep. They found about two-thirds of people saving between $400 and $500 a month were satisfied with their life overall and slept well, compared with fewer than half of non-savers.