This is an excellent bulking cycle based on three strong steroids.
The trenbolone helps to harden up the gains and the use testosterone and Deca should keep estrogen levels from getting too far out of hand.
As with all cycles, protein intake should be increased.
A supply of 1- 1.5 grams of protein per pound of body weight/day is usually effective.
Eat plenty of complex carbohydrates and drink plenty of water.
Take your daily mineral/vitamin complex supplement with this cycle.