Lymphatic drainage massage involves gently manipulating specific areas of your body to help lymph fluid move to an area with working lymph vessels. Lymphatic fluid flows through your lymph vessels that are connecting to lymph nodes, white blood cells in the lymph nodes trap and destroy harmful particles, such as bacteria! Such as blood always moves in a circulatory system , your lymph fluid always moves sometimes it can become trapped and swelling can occur, fluid build up can show in the arms and legs as swelling. Experts call this lymphedema.
Other health issues can occur with your lymph nodes and at any age. A lymphatic drainage massage improves your immune system due to the elimination of toxins.

Also another term for this is manual lymphatic drainage ( sounds good! ) You are best to visit an expert in lymph massage or you can do some basic techniques at home. You can learn simple techniques from youtube and articles, although it is best to consult your doctor if you suspect an issue with your lymph nodes!.
A lot of salons and health retreats offer lymphatic drainage massage from professionals, a session can last from 45 minutes to 60 minutes. It is said if you have heart or kidney issues a lymphatic drainage massage is not recommended, so please as a doctor first! Also it is said that after a lymphatic massage you can go to the toilet, as it stimulates your bowels ( you have been warned )
Other factors such as, muscle tension, illness and injury can also cause lymphatic fluid to build up in certain areas of the body. Sitting at a desk job can be bad for you as lymph fluid moves around your body with muscle movement. Please be sure to get enough exercise each day.
Benefits of lymphatic drainage massage
Boosts your immune system, less colds etc
Helps swelling go down in arms and legs
Stimulates blood circulation and aids in tissue regeneration
Can help with eczema , digestive issues and pain conditions
Provides mental relaxation
Reduces water retention, which help with weight loss