It appears that there are a number of mechanisms through which stem cell production and differentiation occur. One condition is sufficiency of NAD+. This has been discussed in a paper by Zhang. So, (1) take niacinamide or NR if you want lots of stem cells.
SIRT1 does its magic through HIF1 pathway, which is induced through hypoxia. This occurs when you do aerobic exercise, and you become breathless. HIF1 is then triggered and drives stem cell mobilization. This leads to the second "ingredient" for aiding stem cell mobilization: (2) Perform exercises that make you run out of breath.
Finally, scientists have found a link between NO (nitric oxide) production and the magnitude of stem cell pluripotency, their proliferation, and mobilization. NO production can be aided through a supplement known as citrulline malate: (3) So, take citrulline malate to increase NO (when then would drive stem cells to proliferate).