Have a look at this link: https://www.cedarsprimaryschool.co.uk/pe-overview/ for PE ideas.
Number 1: The Body Coach is a very popular exercise channel on YouTube.
There are always lots of 5 minute kids workouts for kids, however starting Monday The Body Coach is running a 9am exercise class / PE lesson which is highly recommend it. Search 'the body coach' and you'll find it or use the link below.
Exercise is good for the body and the mind.
It will help children to stay focussed and active in a structured manner.