Ways to avoid injury while walking for fitness
1. Be aware of your environment. I know, it seems obvious, but many folks tune into their favorite music and forget about the outside world when they are exercising. Stay aware of your suroundings. If you are on roads or trails, keep an eye out for vehicles, uneven surfaces and any obstacles. If you are walking at night, wear reflective clothing so you can easily be seen.
2. Proper footwear. While it's fine to walk/run on the beach barefoot, you probably don't want to do this in city streets. Likewise, you wouldn't want to walk for miles in high heels either. Keep track of the mileage on your exercise shoes and replace them often. In my house we switch an athletic shoe to be an everyday shoe once its worn for a bit, and we don't use our exercise shoes for everyday errands. It gives the shoes more life.
3. Walk with a buddy.
More Answers from Audrey Quick - NASM Elite Trainer, NASM Elite Trainer