The following is an example of Fartlek training: A. 45 minute step aerobics class
B. Warm-up, swim-sprint 50 m, slow 100 m(x 5 further each time), cool down
C. Warm up, run 20 sec, rest 10 sec (repeat 8 times)cool down
D. Warm-up, sprint 100 m, rest, slowly walk back(repeat 5 times), cool down

answerechocardiography;

just be there for her.

explanation:

not necessarily literally but figuratively. also don't say things like "i understand how you feel", because even though you are trying to , you clearly don't understand how she feels (i'm gonna go out on a limb here and assume you've never had a heart attack). also just let her rest. that is one of the best things for you to do.