Among the many veiled or black-betoppered faces registering distaste in his direction, Watson was surprised to see a good many Chinamen.

Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet. Perhaps we assume that our name, address and search preferences will be viewed by some unseen pair of corporate eyes, probably not human, and don't mind that much.

Wake your brother up; it's time for school.

Whether you are a zero fighter (you cannot do a single chin-up) or someone who can do enough to meet the IPPT gold standard, you will find a chin-up style suited to your current level of fitness.