I went to the gym for a personal training session this morning. I keep fit by running regularly but have not done any free weights, squats/lunges for a long time. After doing two reps of 15 of two exercises, I became incredibly dizzy, light headed and nauseous. It did not improve after a minute or two and when I stood up (I had been crouched down) my vision was blurred and hearing muffled, I could barely walk. The personal trainer then got me a sugary drink and a banana and I began to feel better. I then went home and back to bed and when I woke up I had a headache and still do. I am quite shocked by this as I say, I am pretty fit from running regularly. I have been told in the past that I have low blood pressure so I m not sure if this may be the cause??