3 ms·
5bx is a simple, quick routine that starts slow and ramps up over time: http://fit450.com/HTML/5BX_Intro.html http://fit450.com/HTML/5BX_Intro.html
by curmudgeon22 6y ago
5bx is a simple, quick routine that starts slow and ramps up over time:
http://fit450.com/HTML/5BX_Intro.html http://fit450.com/HTML/5BX_Intro.html