WWW.RBINC-SPORTS.COM STEM EXTENSIONS 79 WINGOLD AVE UNIT 10 416 787 4998 X 0 http://www.rbinc-sports.com
Uncomfortable with your bicycle? This might be the best way to get you more up right with less pain on your back and neck. Stem extension or adjustable stem.
Just a couple important points:
The more upright you are the easier it is on your neck and back. Howerver
You use less bum gluteus muscles and more quads which is a smaller less efficient muscle.
Muscles work best when the are fully stretched so the lower you are the more stretched your gluteus bum muscle is and the more power you can get out of it.
The lower you are the more efficient aerodynamically you are.
Therefore if you want to go fast you need to stay low.