Before revision: However, if one of the two components head or heart is not fulfilled (i.e., the person is lacking cognitive support for the activity or he or she experiences unpleasant belly-aches), the person will struggle when performing the activity.
After revision: However, if one of the two components head or heart is not fulfilled (i.e., the person is lacking cognitive support for the activity or experiences unpleasant belly-aches), the person will struggle when performing the activity.