There are several techniques used in brow lifting that can affect recovery time. Open vs endoscopic, endotine vs suture fixation, etc. For this reason it is always best to follow your surgeon's preferences as he/she would know exactly what was done. As a general rule, I would say minimum of 3 weeks before any rigorous activity, which may seem conservative, but given all that you have invested, is definitely worth waiting that extra week or so to ensure that your forehead and brows heal optimally. Additionally, weight lifting and running can vary widely in intensity, so listen to your body if you feel pain or tightness, and definitely back off as needed even if it is after your advised restriction. Best of luck on your recovery.