Resting your forearms is extremely important for building mass. A one or two day rest period between workout sessions is typical, but this will vary depending on how much you've been training and you're overall goals, notes Jonathan Mike, M.S. and Len Kravitz, Ph.D of the University of New Mexico.
internal rate of return (IRR). The rate of discount on an investment that equates the present value of the investment's cash outflows with the present value of the investment's cash inflows. Internal rate of return is analogous to yield to maturity for a bond.hat is, the internal rate of return is the return necessary for the present value of an investment to equal what one spends in making the investment.
Internal rate of return. The internal rate of return or economic rate of return is a rate of return used in capital budgeting to measure and compare the profitability of investments. It is also called the discounted cash flow rate of return or the rate of return.In the context of savings and loans the IRR is also called the effective interest rate. The term internal refers to the fact that its calculation does not incorporate environmental factors.t is also called the discounted cash flow rate of return or the rate of return. In the context of savings and loans the IRR is also called the effective interest rate. The term internal refers to the fact that its calculation does not incorporate environmental factors.