Strength is key. Maintaining strength, muscle and function. But the trick is to do it safely, without causing damage.
Linked to that is play, movement, activity, where possible in the outdoors to take advantage of the general psychological benefits of green exercise. This is to be complex to work on brain health, generating "brain density", thinking about the material I've been reading on neuroplasticity, so I continue to try to learn to juggle.
Function too - maintaining, all the basic movements patterns: gait, squats, hinges, pulls, pushes.
So I am mixing up HIT, Dan John and hillwalking.....