Newbie any advice?

frogfan88

I am 27
2 kids ( 2 and 3)
Weight 136.6

I just started working out 3 weeks ago. I have been going 3-4 days a week so far. No set time or routine. Just when I can get the time I don't have a set routine at all yet. I do try to work different muscle groups on different days depending on how my body feels. But I have mostly been focusing on cardio with a light strength training in between.

For example. Yesterday
I did the treadmill for 3.1 miles 50min. And burned 255 calories( based on the machine) I try to keep at a very high walking pace at minimum. While also burst of sprinting for as long as possible.

After that I did abs.
(i don't know all the terms)

Tea cup crunches
Leg lifts
Planks
Sit ups
medicine ball twist.

I like to do one set of all of these then go back through the sequence again. At least 3 to 4 Times. Sometime I have to lower the reps of individual excersie but I still attempt them.

I always follow up with cardio also. This time i Focus on getting one last push of energy out to finish my workout and then walk it out to relax. This day I did 1.25 miles in 20min. Calorie burn 123 (according to machine)

Will someone anyone tell me if this is a good routine/structure for a begginer workout.?

I am a very small framed person with thin arms and legs. I carry all the weight I gained From my children in my hips thighs and stomach. I am not looking to be built. I just want to get back to normal. Before children I weighed 110lbs with no excersice and ate whatever I wanted. So trying to lose it is gonna be hard I think.

Any help suggestion encouragements are welcome.