Do you mean why does it take so long for test to really get working on cycle?
Here is why.
So if we assume 11-13 days in your system total each injection.
You get a stacked effect. SO Eventually there are several injections releasing at once. Say you inject every 3 days.
By the time you do your fourth injection the first is still in your system at a low level. So you have 4 injections releasing.
It takes 70+ days for full effect. Here is a chart to explain it. This is 250mg every 3 days. Youll notice it doesnt reach full speed till day 71.
Day 1: 250mg T, 0mg E/D/TInjection Day
Day 2: 226.4mg T, 0mg E/D/T
Day 3: 205.1mg T, 0mg E/D/T
Day 4: 435.7mg T, 0mg E/D/TInjection Day
Day 5: 394.6mg T, 0mg E/D/T
Day 6: 357.5mg T, 0mg E/D/T
Day 7: 573.7mg T, 0mg E/D/TInjection Day
Day 8: 519.6mg T, 0mg E/D/T
Day 9: 470.7mg T, 0mg E/D/T
Day 10: 676.2mg T, 0mg E/D/TInjection Day
Day 11: 612.5mg T, 0mg E/D/T
Day 12: 554.8mg T, 0mg E/D/T
Day 13: 752.4mg T, 0mg E/D/TInjection Day
Day 14: 681.5mg T, 0mg E/D/T
Day 15: 617.3mg T, 0mg E/D/T
Day 16: 809mg T, 0mg E/D/TInjection Day
Day 17: 732.8mg T, 0mg E/D/T
Day 18: 663.7mg T, 0mg E/D/T
Day 19: 851.1mg T, 0mg E/D/TInjection Day
Day 20: 770.9mg T, 0mg E/D/T
Day 21: 698.2mg T, 0mg E/D/T
Day 22: 882.4mg T, 0mg E/D/TInjection Day
Day 23: 799.2mg T, 0mg E/D/T
Day 24: 723.8mg T, 0mg E/D/T
Day 25: 905.6mg T, 0mg E/D/TInjection Day
Day 26: 820.2mg T, 0mg E/D/T
Day 27: 742.8mg T, 0mg E/D/T
Day 28: 922.9mg T, 0mg E/D/TInjection Day
Day 29: 835.8mg T, 0mg E/D/T
Day 30: 757mg T, 0mg E/D/T
Day 31: 935.7mg T, 0mg E/D/TInjection Day
Day 32: 847.4mg T, 0mg E/D/T
Day 33: 767.5mg T, 0mg E/D/T
Day 34: 945.2mg T, 0mg E/D/TInjection Day
Day 35: 856mg T, 0mg E/D/T
Day 36: 775.3mg T, 0mg E/D/T
Day 37: 952.3mg T, 0mg E/D/TInjection Day
Day 38: 862.4mg T, 0mg E/D/T
Day 39: 781.1mg T, 0mg E/D/T
Day 40: 957.6mg T, 0mg E/D/TInjection Day
Day 41: 867.2mg T, 0mg E/D/T
Day 42: 785.4mg T, 0mg E/D/T
Day 43: 961.5mg T, 0mg E/D/TInjection Day
Day 44: 870.7mg T, 0mg E/D/T
Day 45: 788.6mg T, 0mg E/D/T
Day 46: 964.4mg T, 0mg E/D/TInjection Day
Day 47: 873.3mg T, 0mg E/D/T
Day 48: 791mg T, 0mg E/D/T
Day 49: 966.6mg T, 0mg E/D/TInjection Day
Day 50: 875.3mg T, 0mg E/D/T
Day 51: 792.8mg T, 0mg E/D/T
Day 52: 968.2mg T, 0mg E/D/TInjection Day
Day 53: 876.8mg T, 0mg E/D/T
Day 54: 794.1mg T, 0mg E/D/T
Day 55: 969.4mg T, 0mg E/D/TInjection Day
Day 56: 877.9mg T, 0mg E/D/T
Day 57: 795.1mg T, 0mg E/D/T
Day 58: 970.3mg T, 0mg E/D/TInjection Day
Day 59: 878.7mg T, 0mg E/D/T
Day 60: 795.8mg T, 0mg E/D/T
Day 61: 971mg T, 0mg E/D/TInjection Day
Day 62: 879.3mg T, 0mg E/D/T
Day 63: 796.3mg T, 0mg E/D/T
Day 64: 971.5mg T, 0mg E/D/TInjection Day
Day 65: 879.7mg T, 0mg E/D/T
Day 66: 796.7mg T, 0mg E/D/T
Day 67: 971.9mg T, 0mg E/D/TInjection Day
Day 68: 880mg T, 0mg E/D/T
Day 69: 797mg T, 0mg E/D/T
Day 70: 972.2mg T, 0mg E/D/TInjection Day