Charlie: Here are some of the answers to your questions (based on my experience):
1. Yes you can do HIIT with weights but they must be weights you can control, so try with light weights. (Any Boot camp or Circuit Training workout that gets your heart rate where it needs to be to, I think, can qualify as a HIIT workout).
2. I never eat before I work out, I have digestive issues which make the impossible for me. But other people can eat and not have any problems, so that would be up to you and how your body reacts. As for eating after, that's what I usually do but I don't follow any specific guidelines (relating to when I eat after my work out, that is).
3. If you mean doing a total body strength training workout with weights, then, no, it does not hurt. You just would not be able to lift the next day since it is best to rest between strength training sessions. Core work can be done everyday but if you are incorporating weights, I would wait one day before I worked the core again.
4. As for the best time for weight lifting, I know there are people that say you should lift before you do your cardio, some who say after. I tend to lift after doing cardio or do them together (boot camp or circuit training). As for time of day, I think that depends on what works best for the individual.
Hope this helps.
Start date weight 8/2/06: 154
Current weight: 136.5
21 Day Challenge
High Intensity Interval Training
Crazy About Cardio
Healthier Fitting Lifestyle
| current weight: 139.5