I was sick dizzy and cruising on pain meds because of broken ribs for about six weeks, then I weaned off the pain meds because the ribs were starting to heal up. Dizziness had reduced down to just if I stood up suddenly or when I lay down in bed at night. I started in with easy stationary and recumbent biking at 8 weeks and eased into cardio rate and some intensity over the next three weeks. Took my first road bike ride at 12 weeks, with someone riding along with me just in case. Did a short and very easy 25. The dizziness at night continued for another couple of weeks and gradually eased off and was totally gone by about 4 1/2 months. Only thing I really notice now is that I seem to have lost a bit more short term memory, so write copious steps by step lists to compensate, but then I am also going through the menopause process yet again because of breast cancer chemo therapy issues, and menopause the first time did a real trip on my brain. I am resigned to being ditzy and totally absent minded and not dizzy. I should also point out that the whole episode was probably more severe because it was the second head hit/helmet/ accident in two months.