Interaction between Halotestin and Testosterone Cypionate

New to using PHDs and I'm trying to improve my endurance and performance with long distance running. I have 3 half marathons and two full marathons beginning the end of August and ending in November with the New York Marathon. Just curious - does anyone know of problems associated with using both Testosterone and small doses of Halotestin at the same time? Or should Halo be used independently of any other PHD?

No problems but for your purpose eq mts 250mg would be best for running as it increases rbc the most also anadrol