Everyone else is right in that most women don't have adequate testosterone to hytrophy or increase muscle mass easily. (If it were easy, some women bodybuilders would be HUGE without steroids...much less expensive.). Anyway, what you want to look toward is your diet. One-hundred percent of what you look like is attributed to at least eighty percent, diet. Don't fall into the "I'm working a lot harder so I need to eat a LOT more."

Keep a ruthless diary of what you eat and what you eat for your workouts. I've been a personal trainer for years and through many mistakes and re-evaluations of methodolgy have found that the clients that are honest about their intake vs. their actual output (bikeing, weight-training, running etc.) are the most successful on body composition.

Those of us that are cyclists need to eat for their rides, but not overeat. That means, an easy ride needs a regular diet, a more difficult ride...more carbohydryates, an extensive ride or an "intense" ride means a diet heavy with complex carbohydrates and adequate protein for muscle recovery.

Be honest with yourself. That's the only way to find the balance.