The benefits of exercise are well-known for the body, but a growing body of research is finding that it also has effects on the brain. Aerobic exercise, such as running or swimming, is known to boost the levels of BDNF (brain-derived neurotrophic factor) in the brain. Other types of exercise are also thought to have beneficial effects. Swimming Swimming is a great exercise for your brain because it requires concentration on breathing and helps to reduce stress. It can also boost serotonin levels, a hormone known to help you manage your depression and anxiety. In addition, swimming improves your memory and mood as it boosts blood flow to your brain. Quality blood flow is essential for healthy brain function and can protect your brain from harmful toxins. Another way that swimming can benefit your brain is by helping to repair damage caused by stress. In a previous study, researchers found that hippocampal neurogenesis (or the growth of new neurons) occurred in depressed rats a