Timbaland Says Madonna Wanted to Give Him an Injection to Stop Him From Eating Timbaland admits he missed out on an opportunity to get weight loss help from Madonna. Back in 2008 they worked together on her album. Madonna wanted to give him a B12 shot to give him energy. B12 speeds up your metabolism and gives you energy to burn calories, work out, etc. She said, let me poke you right there He said all he wanted to do at the time was eat at 5 Guys. Now he is more inspired than ever to lose weight after watching Creed II. What diets or workouts have you tried to lose weight?