Notes
10 x 50 with a 50 cool down per http://www.active.com/triathlon/Articles/12-Week-Swim-Workout-Plan-for-Sprint-Triathlons.htm?act=EMC-Active&Vehicle=Triathlon&Date=12_13_09&Edition=2&Sections=Articles&Creative=12_Weeks_to_Better_Swimming&TextName=12_Weeks_to_Better_Swimming&ArtText=Txt&Placement=2&Dy=Sun&lyrisid=20305941&dart=