How to know if you are exercising at the right intensity when you are pregnant or just had a baby

Rate of Perceived Exertion (RPE)	What it means: It is a way to measure your exercise efforts during cardio-vascular exercise and intervals without the need for a heart monitor.
0-1	On the sofa pushing buttons on the remote control
2-3	Light exertion, walking around the house
4-5	Warm up pace, you are breathing faster and the body feels ‘glowing inside
6-7	Moderate exertion. You’re breathing harder and probably sweating. You can talk, but it’s getting tougher. THIS IS A GOOD LEVEL OF EXERCISE INTENSITY WHEN YOU ARE PREGNANT.
8-9	Hard exertion. You’re breathing much harder and you can only say a few words at a time. You’re wondering how long you can sustain this and it doesn’t feel like long. TO LOSE FAT THIS WOULD BE THE LEVEL OF INTENSITY TO WORKOUT AT. MAKE SURE YOUR HAVE HAD YOUR POST NATAL CHECK AND ARE NOT NEW TO EXERCISE. THIS IS FOR WHEN YOU HAVE EXERCISED FOR A WHILE AND IF YOU WERE A REGULAR EXERCISER BEFORE PREGNANCY.
10	Hardest exertion. You cannot keep this pace for more 30 secs to a minute. This is your limit and you could not speak.