(Original post by Scoobiedoobiedo)
I would do 60minutes rather than 2 X 30minutes, saves time having to warm up/cool down a second time. Plus it will greater improve your overall fitness and endurance.
Wanting to split it in half simply reads 'I want to make it easier' - which isn't the attitude to have. I could be wrong, however that's how I took it.
There may be some benefit to splitting it in half if the reason is so you can work twice as hard in each session, thus resulting in an overall greater intensity. However I doubt that is the case to be fair, considering you want to watch a film. Something for you to ponder never the less.
I think you greatly over estimate the amount of calories you will burn 'plodding away' while watching a film, see my picture below.
I'm much bigger than you, and if I burn just under 900 on a 75 minute fairly intense hilly run, there is no way you burn 600 plodding along for an hour. Exercise machines don't give accurate readings of calories burned.
It depends on the intensity somewhat, and I was excluding the people who meander on cardio machines while reading a magazine, as they fail and don't count. By steady state I meant actual jogging/running, 70%+ maximum heart rate. So given the OP and how things are going my post may a little redundant, never the less..
60minutes LOW INTENSITY, a walk for example, probably does burn as much/less than 20minutes extremely high intensity exercise, you could say therefore you get more 'bang for your buck' calorie wise, which is true to an extent. However most articles I've seen on HIIT only compare calories burned in an equivalent time period, such as calories burned through 20minutes HIIT VS a 20minute light jog. They never seem to look at the whole picture, things such as: how demanding it is, the impact on recovery and the CNS, the fact you can do less of it less often, the extra calories it requires before hand to perform properly.
You could say therefore why walk for 60minutes or jog for 40minutes when you can do some HIIT for 20, but if you burn the same calories HIITing for 20mins as walking for 60 or jogging for 40, but you can only HIIT 3 times a week but walk/jog 7 days a week, over the course of a week you burn more through walking/jogging. - The numbers are just an example, but you can see my point.
Like I said though, I'm not anti-sprinting, just if the aim is to burn as many calories throughout the week/month as possible, hammer the steady state(at a reasonable and challenging intensity, 70%+) in conjunction with resistence training and some sprinting - Everything has it's pros so why not just do everything ey.