My bp is usually in the normal range. However, after I do a moderate amount of exercise (walk on treadmill, lift weights), my bp spikes up about 4 or 5 hours later to around 145/90. At that time, I start to feel my muscles get sore/fatigued from the exercise, and my bp is higher than usual.
I have not exercised regularly for several years, but I am somewhat active since I have a 2-yr old.
Why does this happen hours, rather than minutes, after exercise?
This can happen or last for several hours after exercise but if it doesn't go back down shortly after then it doesn't sound normal. Especially since you are new to this amount of exercise I wouldn't worry about it. You will probably adjust as your fitness level increases but keep an eye on it.
By the way, with any form of high bp you should minimize weight lifting and other anaerobic exercise. Keep it at low intensity or stick to aerobics until you're more fit. Weight lifting can increase bp.
Actually, every normal people when exercising can cause there blood pressure to rise up....That is because when we are exercising isn't that we need more oxygen? We breath so fast that our heart pumps more blood to supply our body with oxygenated blood.