Is it permissible to join a WhatsApp group that aims to gather "energies of praise" and gratitude to Allah, and commit to daily exercises, while prohibiting talking in the group so as not to dissipate the energy, in order to reach high levels of consciousness?

Getting accustomed to praising Allah and training oneself in it is commendable in Islamic law, and it does not require exercises or energy accumulation. A Muslim should remember that all blessings come from Allah the Almighty, and should praise and thank Him for them. Many texts have been narrated regarding the virtue of praise, among them that the Prophet (peace be upon him) used to praise Allah in all circumstances. If he saw what he liked, he would say: "All praise is due to Allah, by whose grace good deeds are perfected." If he saw what he disliked, he would say: "All praise is due to Allah in every circumstance." Also, "The best supplication is 'All praise is due to Allah'," and "Indeed, the best of Allah's servants on the Day of Resurrection are those who frequently praise Him."