Believe it or not, isometric movements (holding a position) are one of the hardest types of exercises. See if you can hold these positions for the time allotted. If you can't, you have something to strive for. If you can, well, hold it longer!! These exercises are best dealt with if you "whistle while you work". Really! Sing a song and you'll find yourself done in no time. Go for two rounds.
Faça este treino com o melhor equipamento de exercício. Recomendamos o uso de um monitor de frequência cardíaca de tira peitoral bluetooth ou um smartwatch para mais otimização de treinamento e acompanhamento de desempenho.