Chiropractic:

Chiropractic Biophysics - How to change a spine for the better, permanently.
Health Grades - Health care professionals profiles and ratings.
Massachusetts physician profiles - Medical board physician ratings.
Ice Heat Pockets - The best ice pack covers.

Business:

BNI - Business Networking International - Rowley's Tritown Chapter

Christian:

Christ the King Presbyterian Church 
What does it mean to be a Christian?

Bikes:

Massachusetts MTB - Pictures of Dr. Berg riding his bike (Don't look Mom!)
Boston B.O.M.B. - Christian MTB group.

Books:

Take Time for Your Life  By Cheryl Richardson - Get control of your life!
Life Makeovers By Cheryl Richardson - 52 Steps to a better life!
Stand Up for Your Life By Cheryl Richardson
Cheryl Richardson's Website
When Working Out Isn't Working Out By Michael Gerrish
The Mind-Body Makeover Project   By Michael Gerrish
Michael Gerrish's Website - Exercise tips, info and more.