In some cultures in the Northern Hemisphere, the astronomical March equinox (varying between 19 and 21 March) is taken to mark the first day of spring, and the Northern solstice (around 21 June) is taken as the first day of summer. In other traditions, the equinox is taken as mid-spring.
Circulation problems that cause dizziness. You may feel dizzy, faint or off balance if your heart isn't pumping enough blood to your brain. Causes include: 1  Drop in blood pressure.
It turns out that the racing heart, dizziness, and lightheadedness Hills felt are all classic symptoms of atrial fibrillation. The vision problem and leg numbness she experienced were due to blood clots. When you have atrial fibrillation, blood clots can form in your heart. If one breaks free and travels to your brain, a stroke could occur. Lucky for Hills, that didn't happen. I feel like I got a second, third, and fourth chance at life, she says. She knew she had survived some close calls for a reason.