Unexplained Fatigue
Feeling tired after long runs or hard workouts is normal. However, if you find yourself exhausted beyond your usual post-workout fatigue and unable to recover, that’s a red flag.
Being overly fatigued—even after rest days—can signal that you’re pushing too hard. Worse, training while fatigued can alter your form and stride, increasing your risk of injury. Your body compensates for tired muscles by shifting the workload to other areas, which can cause overuse injuries in unexpected places.
Changes in Form or Mechanics
Have you noticed that your stride feels off? Maybe one knee is bothering you, but the other isn’t. Or perhaps your right hip hurts, but your left knee is acting up. These aren’t random—they’re connected.
When your body starts to develop an injury, it affects your mechanics. You might unknowingly favor one side to protect a sore spot, leading to compensatory injuries. If something feels off, take a step back and assess what’s happening before pushing through.
Swelling, Stiffness, or Persistent Soreness
Swelling is a major indicator of inflammation and overuse. Many runners brush off swelling in areas like the knees, ankles, or hips, but it’s a sign that your body is struggling to recover.
Persistent stiffness that doesn’t ease up after warm-ups or rest can also signal underlying tissue damage. If you notice consistent soreness in the same area for days on end, your body is warning you that something is wrong.