p90x buddies

DaveinSK

This is more general weightlifting related that P90X specific, but I've noticed especially on the bicep curls that my ability to do them is very on-off. For a lot of exercises I will start to feel them earlier and can power through the last few reps with them really burning. With the bicep curls, I can be starting with 25lbs and do say 5 reps relatively easily, the 6th one might be a struggle, and then after that I'm just done and can't get the dumbbell past 1/2 way anymore. Once that happens even if I switch down to 20lbs I can't do any more reps until the arms have had a chance to rest for a minute.

Is that a common thing, or am I starting with too big a weight and shouldn't be going to the point of failure?

angelexperiment

I am no expert but either you need a lower weight or a break. Maybe start with 10 or 15s? Or 20. See wha5 feels best. Next time start with that lower weight. Your form needs to be good too elbows tucked in at sides and bring the weight all the way down squeeze and up. Do your rep set set down and do some shake outs or ballistic stretch for 30 seconds and do another set. You may need to build up here. It should be done to failure but if it compromises form then do not do another. Then take a short break all the while moving and try another set.

RavenNevermore15

I highly recommend a HRM with a chest strap for accurate reading/calorie burn. Particularly when doing plyo or high heart rate cardio routines to keep track of how you're doing/feeling. P90X is tons of fun, I've done it before. Right now I'm doing 21 Day Fix, also a lot of fun!
It does sound like your weights should be lower at first. Remember you can start at a lower weight and build your way up to a higher weight!

Please feel free to message me or friend me if you want to chat more! Keep up the great work!!