Spirulina is a type of blue-green algae (cyanobacteria), which is grown all around the world from Mexico to Africa, including your favorite holiday destination, Hawaii. Spirulina benefits health in ways like lowering cholesterol and sugar levels in the blood, alleviating heavy metal toxicity and neurodegeneration, etc.
Yes, it is safe to swim while you on periods. Period blood doesn't flow outside the vagina like it usually does due to the counter-pressure of the water. But You still need to wear some a tampon or a menstrual cup to avoid getting into a sticky situation.
Resin tooth filling typically contains a filler particle such as quartz, which provides the mixture's strength and color. It is costly as compared to silver tooth filling.
In some cases, the change in period blood color can indicate a health problem like fibroids, low estrogen levels, and even vaginosis.