Everyone has his/her own perception and taste regarding this. Get chocolate flavouring if you want - otherwise it's just a good powder to add to breakfast, any meals, or drink with gatorade powder before a workout.
Control your diet first and eliminate junk/fast unhealthy stuff from your lifestyle. I think you should aim to have your weight at about 70-75kg, that's relatively healthy, but this with healthy eating and weights.
First stay away from junk/fast and unhealthy foods as much as you can.Because these types of foods plays a vital role to produce health infections and injuries. Excersises like jogging, walking and cycling which are all cardio help reduce fat. You want to be burning more calories than you intake
Everyone has his/her won perception regarding this,no doubt proper sleep is quite necessary for our health and fitness.In my opinion 7-9 hours seems reasonable but lots of people I know sleep way less than that.
Someone should do a survey on the relationship between subject selections and height. 4u maths makes you shorter. Either that, or it's the high concentration of a particular ethnic group.
This is nothing, one of my friends was addicted to diet coke, that's all he ever had and milk sometimes or so he claimed and only 3 weeks ago did he quit drinking diet coke.