[Facts] Sharks Can Live A Long Period Of Time
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. Sharks normally can live for more than 50 years average, However The Greenland shark has the longest known lifespan of all vertebrate species (estimated to be between 250 and 500 years) . The Greenland shark is one of the largest living species of shark. It usually grows 6.4 m (21 ft) long and weighs 1,000 kg (2,200 lb) and possibly up to 7.3 m (24 ft) and more than 1,400 kg (3,100 lb). Most Greenland sharks observed have been around 2.44–4.8 m (8.0–15.7 ft) long and weigh up to 400 kg (880 lb). Males are typically smaller than females. It rivals the Pacific sleeper shark (possibly up to 7 m or 23 ft long) as the largest species in the family Somniosidae. The Greenland shark is a thickset species, with a short, rounded snout, small eyes, and very small dorsal and pectoral fins. The gill openings are very small for the species’ great size. Coloration can range from pale creamy-gray to blackish-brown and the body is typically uniform in color, though whitish spots or faint dark streaks are occasionally seen on the back.
[Facts] High Level Stress Can Shrink Your Brain
According to a new study persistent stress can cause real damage to the brain. It can cause loss of memory as well as shrinkage of the brain matter say researchers. The results of this new study have been published in the latest issue of the journal Neurology . Prolonged exposure to stress can take a toll on your body and brain. Help maintain brain size and function as you age with these tips. For now, your best bet is to simply protect your brain from stress as best as you can. To do that, it helps to know what stress looks and feels like. We tend to most commonly associate stress with irritability or tears, but it’s not always so obvious. “Cognitive signs of stress can include memory loss, difficulty thinking, concentrating, and decision-making,” Stress can manifest as physical symptoms as well. For instance, you may experience fatigue, weight loss, headaches, digestive problems, body aches, and joint pain. Recognize any signs? If so, it may help to start working your way through these tips How to stay ahead of your stress 1. Get moving 2. Don’t undervalue the power of sleep 3. Eat well 4. Take care of your health 5. Reach out to friends 6. Give your brain a break Mindfulness exercises like yoga, relaxation, and meditation won’t magically make your stress evaporate, but they can help you better manage it. Or at least help you feel like you can, which, of course, is half the battle. It is advisable you reduce stressing the brain to avoid shrinking of the brain and memory loss.