Whole blood is well established as the fluid of choice for traumatic resuscitation. In the prehospital setting, access becomes problematic during periods of prolonged austere operations when resupply, refrigeration and transport are limited. To combat this and provide access to on demand fresh whole blood (FWB), low titer type whole fresh whole blood programs, or vampire programs, were established to allow on scene drawing and transfusion of FWB from prescreened donors. In looking to reduce the amount of time from identification needed for FWB and transfusion, the actual blood drawn from the donor occupies the most amount of time. Previous studies to reduce the flow rate have focused on needle interface (ranger lock vs straight stick), while the focus of this study is whether we can use physiologic response to our advantage to reduce draw times and decrease the delay from point of injury to transfusion of FWB. We will conduct a random controlled trial of four techniques conducted in conjunction with the Valkyrie Emergency Whole Blood training program at 1st Marine Division. The following techniques will be evaluated: localized forearm exercise utilizing a stress ball squeeze, systemic exercise with one minute of pushups, prolonged tourniquet placement prior to blood draw, and a standard practice blood draw with no interventions. Primary outcome is whether exercise has a significant effect on blood draw times. Secondary outcomes will evaluate sex, age and weight variations on blood draw times. The results of this study are intended to guide curriculum changes in the current prehospital whole blood programs in attempts to further decrease the delay from injury to blood transfusion in critically injured service members deployed.