Like to use Personal Technology for Fitness?

From Joe:  The New York Times talks about Illustrating Your Life in Graphs and Charts - For Fitness and Many Other Purposes:

 That idea led him to co-found Daytum.com, which makes software to help people tabulate whatever they do and turn it into a chart — a visual depiction of everything from blood sugar levels to how much beer they drink. Mr. Felton said he had even seen a woman use the service to track her irrational fears.

At Lifehacker, readers are asked to share thoughts about whether technology helps you exercise:

 I’ve managed to get into a healthy routine that I like and technology ended up being more of an encumbrance than anything else, so I had to ask—does all this personal technology actually help you exercise and stay healthy?

 [Be sure to read the comments if the question interests you!]