Dynamic stretches are part of an effective warm-up because they can help build endurance for the activity. They also help in flexibility and range of motion in the human body.
A person with sickle cell anemia will have:
Fatigue and Anemia are the most common to occur if you have SCA.
Dactylitis (swelling and inflammation of the hands and/or feet) and Arthritis is also common most likely garenteed to happen.
Splenic Sequestration (sudden pooling of blood in the spleen) and Liver Congestion is fatal and needs to be treated right away.
I hope this helps you :)
Without consistency there will be no consistent results
