Selena Gomez revealed she turns to her younger sister Gracie Teefey when she needs to focus on her mental well-being. The Only Murders In The Building star, 31, opened up about leaning on her 10. Celebrity personal trainer Nadya Fairweather suggests downward dog alternating touchbacks to tone arms while nutritionist Lola Biggs advises fibre-filled foods to help you feel fuller for longer.