How much cardio exercise you do depends on your current fitness level, exercise history, current health status, and goals. For general health benefits you should perform 30 minutes of cardio activity, 5-7 days of the week. Any activity that increases your heart rate and breathing rate can be considered cardio exercise. If you find that 30 minutes is a little too challenging, start with 5-10 minutes and gradually work up to 30 minutes.
Symptoms & Signs. Hairy tongue, medically known as lingua villosa, is generally a harmless condition that alters the appearance of the tongue, making it appear discolored and furry. Hairy tongue is also commonly referred to as black hairy tongue (lingua villosa nigra), but the tongue discoloration may appear white, brown, pink, or green. The color of the tongue depends both on the underlying condition plus the presence of any additional factors, such as the type of food consumed.
Black hairy or furry tongue or yellow furry tongue: This is caused by dead skin and food buildup, and occurs commonly when the papillae become enlarged, swollen, or rough. When this buildup is paired with bacteria or yeast, it can cause the tongue to look yellow or black and hairy.