Make morning time your activity time. The weather will probably be friendlier, your energy levels higher and your agenda emptier than later in the day.
Reacquaint yourself with sunrises and sunsets. A walk at dawn or dusk is rejuvenation defined. Try to make this a daily ritual of life away from home, and you will guarantee yourself both physical and spiritual replenishment.
Get into the water as much as you can. Don't allow yourself to spend all your time sitting in front of the water. Whether it is the ocean, a swimming pool or a tree-lined lake, make sure you get into the water for swimming or games or even walking. Merely standing in waist-high water is a good workout, thanks to the action of the water.
Fly a stunt kite. If there's a good wind blowing, buy a stunt kite and take it to the beach or other large open space. These kites can be easily assembled, then taken apart, making them perfect for traveling. You'll give your upper body a great workout as you struggle to control the kite. You may also have to run or walk to keep the kite in the air - or chase it down once it plummets to the earth.
Get out of the car every 2 hours. Many of us spend a large part of our vacations on the road, either getting to and from our destinations, or using the car for sightseeing. But no matter how beautiful the scenery is, great, memorable trips don't happen in a car seat.
Don't wait for exhaustion or the call of nature to get you to pull over. Get out frequently and stretch, walk, picnic, shop, visit and have fun. It's important for your health and energy, and it makes traveling a lot more interesting.