Table 3. Self checklist before starting exercise of remote cardiac rehabilitation.

1	Severe leg and foot pain
2	Fever
3	Feeling tired
4	Nausea or feeling sick
5	Headache or dizziness
6	Ringing in the ears
7	Feeling ill with sleep deprivation
8	Loss of appetite
9	Diarrhea, constipation, or stomach pain
10	Have a cold
11	Heart palpitations and shortness of breath with low levels of exercise
12	Chest pain with low levels of exercise

If patients have above symptoms, they are recommended to stop exercise. If their condition is worse than usual and do not improve, patients are recommended to go to hospital.