For many years now, I have battled with dizziness during exercise. It doesn’t happen during every workout, and I can’t seem to find one consistent reason for my dizziness. Some days, it is so bad, that I must stop exercising, call it and run to the bathroom to vomit. I did some checking online and tried to find some cause (since my GP hasn’t been able to find anything physically wrong either)
I came across an article that highlights some pertinent points, however sometimes none of these reasons work for me, but perhaps you may find them helpful.
You are exercising on empty stomach. Some people exercise early in the morning before they go to work. After the last meal which was 8 to 10 hours ago a night before, the body is low on energy. So, if this happens to you, you should eat something light like fruit or oatmeal 30 to 60 minutes before exercising.
You are not drinking enough water. If you are exercising for long hours and you do not drink enough, as you sweat, you lose water. So, continue to sip enough water every now and then throughout the exercise.
My friend had once felt dizzy while doing some yoga poses where her head is lower than the heart. One example was downward facing dog. People suffer from low blood pressure normally have this problem. What the instructor advised her was to take her time and change the posture slowly. As for people doing weight training, perform standing exercise and then all the floor exercises later.
As for myself, I sometimes feel dizzy after I performed leg workouts such as squat and deadlifts. What happen is that the blood has rushed to my legs to fuel the leg muscles. Instead of sitting down or standing still, I walk around to help the blood recirculate back to normal quicker.
You are working out extraordinary too hard too soon. If you have not been exercise for some time and now trying to do vigorous exercise for hours, your body may not be able to take it. Take things easy. Overtraining and lack of warm up can also cause dizziness.
Finally, sometimes, when you stop running or cycling suddenly, you get dizzy or lightheaded. Some people even fainted. When we work out, our hearts pump harder and faster. This pumping will increase blood flow to the actively exercising muscles. Blood vessels in the skin expand to dissipate heat. When exercise ends suddenly, the heart slows down its pumping activity, decreasing blood circulation even though blood vessels remain dilated. Thus, blood pressure can fall and a person can feel dizzy or even faint. To help prevent feeling dizzy after exercise, cooling down is important. Slowing down in this way can help by maintaining heart rate and blood circulation. If you are running, jogging first before dropping down to a brisk walking pace could do the trick. Do not stop immediately.