Weight loss help?

Sunshine☀️ • In love with my one and only bestfriend and soulmate:)
My husband and I are wanting to loose weight together... We needed a little competition to get us motivated, so we decided to see who could loose the most weight over two weeks... We are weighing in tomorrow night and then on the 30th were going to weigh again. 
Any suggestions on the certain foods and exercises that help the most?