That would be considered kneeling at the waist and stretching
1. Anaerobic
2. Anaerobic
3. Anaerobic
4. Anaerobic
5. Aerobics
6. Aerobics
7. Anaerobic
8. Aerobics
Lymph vessels are more like valves than veins. They prevent back flow, so things only need to go in one direction, unlike other areas of heavy traffic. Let me know if you need more. :)