6'1, 84kg, 25 year old, male, resting heart rate 90, during this routine gets up to 167, as measured with Garmin Forerunner with heart rate sensor attachment strap.
New exercise routine is 3 sets of 15 chin-ups (alt. day pull-ups) superset with 3 sets of 16 jump lunges, followed by superset of 45kg barbell (3x 8) squat and (3x 8) standing barbell shoulder press.
Haven't gotten to the next part of my routine yet, so won't mention it.
Heart rate spikes during each exercise and then near the end I start to feel really sick and lean against some equipment then leave (my routine unfinished). I did faint after going too hard on single legged dumbbell squats 6 months ago, so have avoided them since.
I've only attempted this new routine twice, and I got further into it this time (barely got the first set of squats last time, this time I did all but last superset of squat+press).
Is this normal, and I should just man up, should I run more to get fit before getting into this, or is this something I should get checked by a medical doctor?