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Blake Shelton<\/strong><\/a> is suddenly looking much slimmer \u2014 and pals dish the country heavyweight ditched his unhealthy diet because fed-up wife Gwen Stefani<\/strong><\/a> banned him from their bed until he lost some weight.<\/p>\n Insiders exclusively tell Life & Style<\/em> the \u201cGod\u2019s Country\u201d singer, 47, dropped as much as 20 pounds by eating lean proteins, veggies and fruits \u2014 and even cut back on beer after his fit duet partner laid down the law. \u201cBlake feels like a new man,\u201d a source says. \u201cBefore, he was huffing and puffing going up stairs \u2014 but now he\u2019s darting up and down with no trouble at all!\u201d<\/p>\n The tipster adds that the No Doubt frontwoman, 54, got her hubby to replace his favorite frozen pizzas and other junk foods with sensible, well-portioned meals.<\/p>\n \u201cShe said no nookie until she saw improvement. It may have sounded harsh, but she had to make Blake realize she was serious!\u201d the insider spills. \u201cHe\u2019s tried to lose weight before with little to no success. But Gwen put her foot down. She wants him to stick around<\/a>, and his unhealthy habits were grating on her nerves!\u201d<\/p>\n The source admits Blake initially considered his new eating plan \u201ctorture\u201d \u2014 but explains as the fat melted away, Ol\u2019 Red got his mojo back. The insider confides, \u201cTheir love life has greatly improved, and Blake has more stamina and energy now than he\u2019s had in years. He realizes he really let himself go. Now there\u2019s sizzle in their marriage again.\u201d<\/p>\n<\/p><\/div>\n<\/p><\/div>\n