Is it enough? (exercise)

Okay so does anyone ever feel like they aren't exercising enough, even though if you list it out it seems like a lot?  It always happens like an hour after I'm done and I'm not sweating or breathing hard anymore and I feel like what I just did for like an hour doesn't really mean anything.  Maybe I can tell you what I'm doing and you can tell me what you think, or maybe what you would add etc.

6-7 miles on my stationary bike, at about 16.4 mph

200 arm lifts- on each arm

100 squats

and 300 crunches

Thoughts?

That's pretty much my definition of overkill lol. Im sure it's plenty. Really what you need to do is make some goals, make a plan, structure your workouts to achieve those goals, and track your progress so you can go back and look at the the trend in your overall fitness/speed/endurance/strength and be satisfied with the work you are putting in. 

Well I have actually built up my endurance, I've been at this for almost 6wks and when I started it was so hard to get to 2 miles on my bike.  And like 2 wks ago is when I started the squats and after the first day it hurt soo bad to sit or stand lol but now I do the same amount and it doesn't hurt at all.  I think I'm just trying to get in an hour of exercise a day so doing all of that is usually an hour.  I like to start with the bike to get my heartrate up and then I alternate arms and squats and then do crunches last.  I don't really feel that sore at all so that's why I feel like I might want to increase, arent you suppose to increase as your endurance increases?

As far as cardio goes, you increase your time/distance/speed as you get fitter. But for weight lifing and strength training, more reps isnt always as productive. I would encourage you to look into something called "new rules of lifting for women"  - i have a couple friends doing who LOVE it and have really seen great results. 

thats a lot  , but everyone is different

I would cut some crunchs and arm lifts incread the distance on the bike and maybe start some weight lifting ( start slow )

What about some planks to strengthen your core? How many days a week do you exercise? I strive for 3 days a week and do an hour of cardio and an hour of weights.

Well since I'm in the losing phase and the only other thing I would be doing is sitting on my butt I do an hour everyday, I figured it's more productive then just coming home and sitting for hours.  I def will incorporate different exercises, I'm just really learning different ones.  Actually maybe you guys can help me, I have a sensitive back so I do crunches on my bed, which is sooo not good for you I know, but I really want to work my abs, I know you can't target specific areas, but I would love an exercise where I can feel it in my abs, the other stuff I'm doing I can feel in my arms and legs, but not my abs, do you guys know any ab related exercises where I wouldn't have to lie flat on the ground on my bike?