Could it by any chance be ionic
Heat is produced by matter. Matter is made up of atoms and molecules and energy causes the atoms and molecules to always be in motion. ... Molecules move slower in cold things and molecules move faster in hot things. The more molecules, more heat.
It's a hamstring injury. The hamstrings are the three posterior thigh muscles: semimembranosus, semitendinosus and biceps femoris. All three of them <span>cross the hip and the knee joint and because of it, they help with the knee flexion and hip extension (straightening). </span>
<span>The mitochondria in eukaryotic cells originated from prokaryotic cells, bacteria that were once free-living. The mitochondria have their own DNA, which is inherited from the mother in most species. Similarly, plant cells have organelles called plastids which contain their own DNA and originated from free-living bacteria. The chloroplasts in plant cells, which convert the energy of sunlight into chemical energy via photosynthesis, are a kind of plastid, and they originated from bacteria that could do photosynthesis.</span>