27-10-07, 11:03 AM
|
 | Have a sexy day. | | Join Date: Aug 2007 Location: Northern Virginia, United States
Posts: 282
Thanks: 20
Thanked 20 Times in 19 Posts
| |
| not sure what you mean by "dynamic tension". is that similar to how the bowflex works? if so, i think it's bullshit. in my opinion, good old lifting weights work. |