Mix yeast, tepid water and 1 Tbsp. of brown sugar together and set aside.
Next, mix together cup of hot water, brown sugar, salt and oil until sugar starts to dissolve. Add while stirring the 1 1/2 cups cold water and wheat germ then stir in 2 cups wheat flour. Add yeast mixture and then stir in balance of whole wheat and white flour. Turn out on table and knead in the other 2 cups of flour.
Place in oiled container (roll dough around to coat surface with oil), cover and let rise 1 1/2 hours or until doubled. Punch down and divide into two loaves (9x5 or 3 for 8 1/2 by 4 1/2). Place in pans and let rise 1 hour or until just above top of pan.
Bake 350 degrees F for 30-35 min. Take out of pan about 5 min. after it comes from the oven. Place on wire racks and let cool completely. Wrap in foil.