A shake isn't going to hurt it but may diminish the stimulant effect of it. I have not tried what you are doing personally but I woul feel the stim would already have you rolling good by the time your wo kicks in and should be fine. I take my ROK 30 min prior but it hits everyone different so experiment with the timing. Also I take BCAA's during and its no problem so that may be another option for ya. Hope this helped and feel free to PM me anytime.