I dont plan my restdays, i take them when i need them as that is what works best for me. I know my body so well and hate planning rest days, i take them when i need them or when other things in life happen so i dont have time to exercise. Though if you struggle with exercise addiction or struggle with being able to rest, then i suggest you do plan your rest days and then when you feel comfortable resting and listening to your body you can progress onto listening to your body and taking rest days when you need them. I.e taking 2 or 3 or a whole week or two, if that is what your body tells you without feeling guilty. Or working out for 10 days in a row (i.e not doing the same thing all the time, but if you strength train, it is possible to train different muscle groups each day so that you dont overwork your muscles.) But it is very individual about how often you can exercise, how much energy or motivation you have, the important thing is to find what works for you. Make sure you eat enough and get enough rest and enjoy what you do, not that it is a chore or a "must" but an enjoyment. Anyway, that was not what i had been planning to write. When i woke up this morning my body was sore and i knew that weights would be far too heavy for me today.... those days when you know that movement is just too tiring. So instead i went for a walk to get some fresh air and then made myself pancakes for breakfast before watching a series for a while and getting some online stuff done. Though i have not been productive today at all, despite not doing loads at the moment i needed a break today, hahaa. A bit like taking my work pause before i have even done any work XD And instead of a 10 minute break it becomes a 10 hour break!!
Now i need to make something proper to eat ^_^ Important with proper meals and not just snacks, haha. Though snacks are just so much yummier.