What is that saying in the film and television industry about children and animals? Never work with children or animals?

So, imagine what it would be like to teach a yoga class with children and animals.
What is that saying in the film and television industry about children and animals? Never work with children or animals?

So, imagine what it would be like to teach a yoga class with children and animals.
I've been trying out a new smartphone alarm application that monitors your sleep patterns and calculates the best time to wake you. This version also records noises in the night that might disturb your sleep. I knew that I snored but I didn't realise how loud I was!
When people ask me how long I have been practising yoga, I usually say, “Ten years. The first five years on and off but I have been attending a class once or twice a week for the last five.”
However, I actually first tried yoga when I was 15. Yoga was offered as an option for sport, and not being very athletic, it seemed a perfect choice for me. Unfortunately we had to choose a different sport for the next term and then it was never offered again for my year. I didn't realise how enamoured I was with yoga until I came across these notes.
This sequence is designed to remove physical tensions (particularly in the back and shoulders) and focus and relax the mind by coordinating the movements with the breath. If you have time, end with one or both of the following: alternate nostril breathing to calm and balance the body and mind, or yoga nidra to invoke deep relaxation.