I am 28 years old male. I am overweight and been working towards getting fit. I have been working out (bodyweight exercises) and recently I suffered some kinda "blackout" after immediately completing my hi it routine. I was sweating profusely and suddenly I could feel myself very weakened (shaking or shivering in body) and could breathe properly. I could feel my eyes vision getting blurred and my lips got white (dehydration, I believe). I also felt some sort of pain near the left rib cage before all these started and then it all happened. I want to know what could be the reason for it. And this has happened to me before also like few years back where I was also exhausted while working (some work related stress) The problem is whenever it happen I feel some sort of panic attack like whats happening and all and feel restlessness. I quick had a Electrolyte drink and had it while chill water and after some time it went away. But I am irritated that whenever I work like that it happens to me so I am basically looking for one time solution to this. Also, when this happens, I usually feel some sort burn in my brain and lose my balance. Please help me in this. And let me the cause and preventive measures I can take. Because right now I need desperately to lose weight and be fit at the same time unable to put work (exercises) on my body. Thank you!