With the weather being so hot recently, we've started to walk early in the mornings, if we can get up in time. I'm generally an early riser at between 5 and 6 am, but getting sleepy head to leave the pit is a challenge.
Anyway, before 8 am is reasonable, even though 7 am would be better because of the sun's heat. I'm not keen to walk before sunrise for safety reasons.
I now take a 1kg weight in both hands so I get to strengthen my arms at the same time as walking and I feel so much better during the day for this as well.
Target is 10,000 steps, but we're lucky to achieve this most days because it's so damn hot.