Unlike the discrete waveform from an ecg, the emg waveform is irregular. why is this?

Question: Unlike the discrete waveform from an ECG, the EMG waveform is irregular. ... An ECG records electrical activity from the heart. Unlike the heart, skeletal muscle does not contract in a fully synchronized fashion. Instead, an EMG records the unsynchronized electrical activity of many muscle fibers.

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works

Probably because you wake up early. even when i get a good nights sleep i still feel tired if i wake up early. or maybe you just need coffee.