Losing weight is never easy! Just remember, when working out the key to avoiding plateu is switching up your workout every once in a while. Routine at the gym is your enemy. you always want to challenge your body. If you are trying to lose weight cardio before and after a workout is key.
Even with cardio you have to switch it up! Treadmill, sprint for a few minutes, walk, switch to incline, try to lightly jog on incline and repeat. I find that just running a few miles on the treadmill is less effective but i really do see results when i challenge myself with sprints and incline.
Running outside is harder than the treadmill , if you want to challenge yourself, take a morning jog. Warming up for a workout is essential, and what better way to warm up then with a little running!
when doing cardio your body continues to burn more calories then it would usually throughout the day. thats right, the entire day! some studies show that it is actually longer, and that your body continues to burn calories for 32 hours after cardio. If you run daily than your body is almost always burning more calories.
If you want to lose weight while getting your muscle mass up then keep the cardio before a workout at a minimum. On leg days I try to run for only 5 minutes as a warm up because then i can squat with heavier weights and if i feel like i need to burn off some fat then ill do more cardio after. Nothing to intense because although cardio helps you lose fat, it can make you lose some muscle as well.
I often dedicate at least 1 or 2 days to complete cardio at the gym and on those days i get some ab workouts in as well. I find that those 2 days actually do a lot for my body, especially if i switch up the cardio. I am usually switching back and fourth between cardio machines, and as silly as that sounds I really break a sweat and see results. It also keeps me going, when i get tired of one machine ill switch to the next, it challenges your body and burns more calories. Get that intense cardio in!