If Ms Muller wanted to try out and explore her and her husbands sexuality, cool. But I guess she actually wants to sell her book. Isnt that stupid??
Just having sex on a daily basis gets mechanical and degrades the experience of satisfying sex. Obiously it cannot be lightning and thunder each time.

These concepts sounds so much like a marketing/Sales pitch.. I doubt if the book will sell ...besides how exactly would anyone know if they are really doing it on a daily basis?