You do have to track everything you eat, which is easy if you're following a Weight Watchers' recipe or eating a prepackaged food with the points pre-calculated. It gets a bit trickier when you prepare your own recipes as you have to break down the ingredients and do the math -- although that's certainly simpler if all you're doing is, for example, grilling a chicken breast and making a salad. And, under the new "Freestyle" program, that's a meal that could be points-free under the current guidelines, depending upon whether or not the salad is dressed.
No matter how fit you are, climbing up a flight of stairs is always a challenge. That's because steps are designed to be short so that you have to engage additional muscles, like your glutes, quads, and calves, to bring your body up. Take your cardio to the next level, er, step by doing this HIIT StairMaster workout, working your way from a comfortable, moderate pace to all-out effort.
The truth is that weight loss is about creating a calorie deficit -- in other words, burning more calories than you take in. So, they say, while running at an 8-minute-mile pace might be a great calorie burner, if you're not going to do it, it's not going to help you. Instead, start with something you can do, like walking or working out on an elliptical machine or exercise bike.
The Academy of Nutrition and Dietetics (AKA the top nutrition authority in America) released a revised paper this year saying that both vegetarian and vegan diets are best for people's health as well as the environment. If you're not ready to make a complete shift to meatless and cheese-less, consider "part-time" vegan and vegetarian plans, where you eat mostly plant-based at breakfast and lunch or on weekdays, and then eat fish, meat, dairy, and eggs only during designated times.