Keeping Fit, or trying

Today I woke again at dawn, I am getting used to waking up at this time, although I'm still lying in bed until 8am.Today I was out of the house at 8:45am and went for a brisk walk. I tend to make sure that I don't walk the same way each day, and to try and push myself a little bit more each day, either by walking quicker, further, or more up hill. This morning for instance I decided to walk my normal route but in reverse with a few alterations along the way. This had me going uphill at the start of the walk until I was out of breath, hot and rather sweaty. One of the benefits of the excerise is the chemicals released in the brain, the other is just mental well being, and obviously the physical aspect of it all.I have increased my goal today up to 50% the reason is becasue I am now walking at least 2 times a day for almost an hour each time, and I'm starting to push myself and increase the old heart rate. I have also got a Tai Chi video which I'm starting to practice, the only problem is that I would prefer it if I was outside and not doing it in front of a screen, I guess I will have to learn it so I can take it around in my head and make it a part of my walking regime.