Thanks for the welcome.

mtbdarby, I believe a brick is so named because your legs feel like bricks after you get off the bike to run. My duathlon had 1.5 mile run, a 17 mile bike, followed by a 5K. So, in training, I'd ride 20-25 miles and then jump off the bike, change shoes and run 2 miles or so, just to get my legs accustomed to the transition. Everything I've read indicates that bricks should only be done once a week or so. I did them every other week.