During peak times, the "personal space" budget drops to zero. Be prepared to become very well-acquainted with the back of a stranger's coat.

While this could refer to a on a academic topic (like carbon nanotubes) or a meta-review of video content platforms, I am providing a review of the London Underground (The Tube) , as it is the most common association with the term. Review: The London Underground (The Tube)

The London Underground, or "The Tube," is the world's oldest underground railway. It’s an iconic, sprawling network that manages to be both a marvel of engineering and a daily test of patience for millions of commuters. The Good

If you're traveling a short distance in Zone 1 (like Leicester Square to Covent Garden), it’s often faster—and much nicer—to just walk!

Older lines (like the Central or Northern) can feel like a sauna in the summer. Air conditioning is a luxury mostly reserved for the newer, sub-surface lines.

For getting across a city as massive as London, nothing beats it. With trains arriving every few minutes on central lines like the Victoria or Jubilee, you rarely need to check a timetable.