Severe stress is a heightened state of mental or emotional strain that can occur in response to challenging situations, such as work pressure, relationship issues, or financial problems. It can lead to physical symptoms like headaches, fatigue, and digestive issues, as well as emotional symptoms such as anxiety and irritability. When someone experiences severe stress, their body may enter a "fight or flight" mode, releasing hormones like cortisol and adrenaline. Prolonged exposure to severe stress can negatively impact overall health, increasing the risk of conditions like heart disease and depression. Managing stress through techniques like exercise and mindfulness is essential for well-being.