On day 1, it says, "Be your own dishwasher." Really? I'd rather dump them in the dishwasher and do a real exercise or go for a brisk walk. Standing in from of a sink doesn't compare to those unless you never actually move. Plus, it isn't fun.
On day 2, it says "In a shopping center, park once and walk to and from you car between stores." Skip this one if you're over 50. They'd probably think you have Alzheimer's... Do it if you're really bored or have nothing else to do.
If you don't have kids, a dog, a bicycle or a car you can skip days 18, 21, 24, 25 and 27. Although 27 is worded "pet", I'm thinking that cats, goldfish, hamsters, guinea pigs, birds and rabbits would not be interested in "chasing, fetching and running games".
About day 15 "Do it yourself", it's my personal experience that hiring someone to fix the mess I make of "do it yourself projects" is more expensive than just hiring the right trade in the first place.
Day 20 could get you fired. If you stop sending fast and efficient email with electronic attachments and start walking "down the hall (or street)" for long chats, your boss could become seriously upset with the amount of time you're spending. Especially if it's walking down the street with paper instead of sending a quick email with an attachment. Add to this day 19 (workout at your desk) and day 23, pacing while on the phone (if you can - many workplaces still have landlines with short corded phones so walking while talking isn't actually possible). When you get to day 30 (fidget at your desk) your boss may be looking at you strangely...
With day 28 and hanging your own laundry - most of the year my laundry would freeze if I did that. During the nice months, it comes in covered in spiders and bird droppings. You can tell I'm about to do this again anytime soon, can't you?
About day 30 "Dance to the car radio" - please don't do this while you're driving, it could cause an accident!
What were they thinking?
Ones I liked were:
Park further away (minus the running back and forth)
Wear a pedometer
Carry more weight
Take the stairs
Plan an active vacation
Take an evening walk
Dress for comfort (when possible)